Arias | Heat Index

E R

SC O

Heat Index for clarinet quartet

_________________________________

2025

PE

R

U

SA L

Spencer Arias

d

R

PE U SA L R

SC O

E

E R

SC O

Heat Index

SA L

for clarinet quartet

2025

PE

R

U

Spencer Arias

a

Program Note Living in Arizona means developing an active awareness of how heat shapes our daily lives. In Phoenix, the average daily temperature in July (the hottest month of the year) hovers around 95.5°F (35.3°C), with record highs reaching 122°F (50°C). The average daily maximum in July is 106.5°F (41.4°C), making heat not just a condition but a constant presence.

What we often overlook, however, are the residents who lack access to reliable transportation. Spanning over 1,100 square miles, the Phoenix metropolitan area is one of the largest examples of urban sprawl in the United States. While Valley Metro provides transit across much of this region, weekday ridership averages only about 126,700 or roughly 3.5% of the population. Limited route coverage, infrequent service (with many buses arriving only every 20 minutes), and the unbearable nature of waiting in 110°F (43°C) heat contribute to this low usage.

SA L

SC O

R

E

The result is a disproportionate burden on lower-income individuals, many of whom rely on these limited transit systems for work, education, and access to basic needs. Heat Index is in dialogue with the efforts of Arizona based landscape architects and urban planners who are working to mitigate this harm through the strategic use of shade, trees, and thoughtful redesign of public infrastructure. The work reflects both the oppressive weight of the desert heat and the human resilience required to move through it.

Source US Department of Commerce, NOAA. “Climate.” National Weather Service, December 16, 2024. https://www.weather.gov/wrh/climate?wfo=psr.

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Instrumentation

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American Public Transportation Association. “Transit Ridership Report Third Quarter 2024” https://www.apta.com/wp-content/uploads/2024-Q3-Ridership-APTA.pdf

Clarinet in Bb 1

Clarinet in Bb 2

PE

Clarinet in Bb 3 Bass Clarinet

Commissioned by Freakwood Clarinet Quartet

Duration: 10' First printing of this edition, November 2025

Copyright © 2025 Spencer Arias (ASCAP). All Rights Reserved.

Published by Just a Theory Press | www.justatheorypress.com

JAT-101-069-SP

Commissioned by Freakwood Clarinet Quartet

Heat Index for clarinet quartet

  

Clarinet in B♭ 3

 

          

     

    







  





 



 





 





 

         











R

PE    sub.

   







         

  





   

  

12



 









 

        



   



 

 



         

              

Copyright © 2025 Spencer Arias (ASCAP). All Rights Reserved.

Published by Just a eory Press | www.justatheorypress.com



 





  

 

      





 



      

  

    





9                                sub.        sub.



              

SA L

 



  

U

5  

  



E

  

Clarinet in B♭ 2

Bass Clarinet





R

 

Traipsing Along  = 128

SC O

  Clarinet in B♭ 1   

Spencer Arias

  



alerted      alerted



     





  



   

           alerted                 alerted 

JAT-101-069-SP

6

14  

 

 

  





    



  



  





    







     





    

  

Full score

   



  





    



  





  

  

Arias: Heat Index

           

           

                  

E

                                          20 

SC O

R

       

21         

                                                       droplette                                             droplette                                              droplette                                                  

SA L

          

         

         

PE

26  

R

U

          

               



          





         

             

           



  



                                       

          

             

         

      

          

         

 

          

  

   

  



 

   

  



  

        

  



 

 

  



  

    

 

   

   

 

 

  









 

 

  

 

 

        

  







  





   



PE  



  



39             

 

       



 

 



 

       

  





 

    

 



  





  

 

    



  

                                                    

R

  

 



 

SA L

 



 



  







U

35 

 

E

 

7

R

31          

Full score

SC O

Arias: Heat Index





  

      

           

   



  

     







  



   





     

  

       

     

       



      



  





  

     







   





      

   

8

Arias: Heat Index

Full score

 



     

        

  

        









          

     

      

          

  

         



           

      

      



              

SC O

        

  

E

            



R

 43          

 



SA L

47                                                                                                 



    

      

53

PE

      

R

U

        



51

       

  

     

 

     

 

 

    angrily     angrily     angrily     angrily

   

    

    

    

   

     

         









      

  

  









  

  

           cantabile



   

                      intensely                         intensely                           intensely    

  

  

                 

   

                 

   

                   

     

     

    

  

        

  

69

ritardando

       

 

    



   

 

     

   

PE

    

         

   

   



 

  

   

   

   



 









  





   











                            

    

  



                            

  

  



                          

   

 

U

     

   

 

   

ritardando

   

SA L

   

R

   63

  

  

E



9

R

59  

Full score

SC O

Arias: Heat Index

   

   

                                  

    

Gently  = 60

         

    

         

   

    

         

Intensely  = 128

    

     



    

     

           

  

  

  

  

   

   

                                                                  

Full score

   82  =                                      sweetly                                              lightly                                           lightly                                         

 







        



       sweetly

                      

 

SA L

SC O

86                       

    

         

  

R

 





PE

95   

       

                   



   



    

                        

                                                                                                    

       

 



 

    

                               

U

                         

                    

         



 

 

       

R

78

Arias: Heat Index

E

10





 

      

        

           

                      

                                             

Arias: Heat Index

         

                                                                                                                                                                 

104

         

  

   

 





R



 



      









   



  



SA L





  

        



 

PE

120  

 



     

U

  



114             rapidly

R



 

 

                         rapidly                       rapidly                       rapidly

          



      

SC O

 

112         

 

E

                   



11

Full score



   

 



   

  



  





     

    





  





    



 



    

    

 





 

 



 

    

 

127   

 

   

  







 

   

 



 





 

Arias: Heat Index

Full score

   

 





 

130



 





 

 



 



     





 



 



 



 

                                             

  



 



 



 





 

 



 

 

 



 



 

E

12

  

     

 

 









  

    

    



 

  

 

     

  







  

  



  

SC O

 

PE

137      





  

 



  

SA L

 

  

  

  

 



R

  

  



  

   



U

134       

  

  

  



 

  

 

  



   

  

  



   





  

  

  

 

R

                                                                 

    







 

  

   

 

 

  

 

   

  

 

     

  







 

  

    





  

  

  

  









 





    

  









  





 

                 



     

  



 

143    



  

 



    

  

 





    





  

  

  

  







   



   

  

    



    

  

  

  



   



  

 



 

   



145

 



  

  

  

 



 



matter of factly           matter of factly

  

  

  

 

 

147  



 



       

PE

 

R

U

  



 

   

      



     

   

    

          

          

 

 



 



   

       

     

  





   

         

         





        matter of factly                                            matter of factly   



 

   

E

     



 

  

R

  

SA L

140     

Full score

SC O

Arias: Heat Index

 

 



 



   

       

     

     



13











    



   

         

         

         

   

      

           

            

14

Arias: Heat Index

Full score

    

 

        

   



   

156               



 



 



 



             

                                

           

           



 

 

  

 

  

   

  

  



  

  

  

 







 

       

  

  

 

 

   



  

  

 

 



  

  

  

 





            

 





 



  

 



  



 

  

  

  

  

 

 

 

 





 

  



  

  



 

  

  

      

  

  

   



    

U

R  

PE

159    



    

SA L

                

 



   



 



   

        



 

   

 

E

     

 

 

 

 

R

    



SC O

153  



  

  

  



 

  

  

 

   

  

  



 

  

165    

 



   

  

  

  



dim.

dim.

 

168             

PE 



  







  

  





  

 



        

  



  

 



  

  

















  

  

 

 



  

  

  





  

  

 

  

  

dim.

Ricocheted Water Droplettes  = 128



  

  



 



  

  

 

  

  

  

  

R

 

  

 



dim.

  

  





 

U

 

 

 

 



  

  

  





Play 3 times



 



    







  

 



  













 



  



  









   



 

  

  

15

  

  

  

  

  

 

                        

  

  

  

  







 

  

  







  



 



  

  

  

 

E

 



 

R



SA L

162    

Full score

SC O

Arias: Heat Index

       





16

Arias: Heat Index

Full score

174    172                                                                                              blissfully Play 3 times

                           

176                             





                    

R

U

                                         blissfully  180                     

   

    



                        



SA L

   

 







 





 

  

  

 



                



PE



   

  









                

                         

 

 

E

   

                           

R



                          

SC O









 

 

      



         

 



  



  



 

187    



  

        

      

 

 

   



   







 

  

  

 

   











    



   

  

  

   





 

PE 

   

188

191    







  

  

  



   



 

   



      







  







  







             



 



  







  

  



  





  



  



         

     



E







SA L







U





     



R



 

       blissfully

SC O

183    

17

Full score

R

Arias: Heat Index







 



   

 

     

  

     

          

     



  



  

18

           





   

   

    

 



  



 

   

 





  





   





























  

 







                            

  

     



 





 

   

   

 



  

with conviction

          passionately                   

PE

201    



  



       

U



  

     

R



  





       





  

198





E





  

 

SC O







SA L





197   

R

      195



Arias: Heat Index

Full score

   



   



cresc.



   



   

   









   





   



 



 

203   



 





   



Arias: Heat Index

 

207   





  





 



  





PE 



     



    



  

    



 

    

 





   

   



 





210    

   





  



   

 



 



 

 

    



 

    



   



 

 

 

 



U



   







 



 

 





  

 

 

 

  



  

 

  

    



 



 

  

 

  

    





 





 



    

 

  





   



E

    



 

R





SA L





 



R





 

SC O

204             

19

Full score

  



 



     

 

 





    



 



 



 



  

20

Arias: Heat Index

Full score

                                                           213



217   



 





 



  





 











 







 





















 





 





 

 

 

















             





 



 

              





                                                                   

PE 









221        



 

R









U





E







R







SC O





SA L



        

                                                            

 

     

       



      

       





    

      





    

       

Arias: Heat Index

   225                       

229    



  

 



 

 





 





 

  

 



  

 

 



 

 



   



   

   



 

    

 



  





         with force



 

 

       

R







with force

 

E





PE

232  





 



 

              with force                                    with force

      

      

 

 

21



 

SC O







227  

  



   

  

         

SA L









 

  

 

 

   

U





R



Full score

 

 

        



   



 

    

         





 



 

 



  



 





        

  

  

           





 

   

 



 

 

 

   

 



 

   

   

  





  

 

 





  

   





  

   













  

241

 

  







 



 





 

  



 

 







 

    

  

    





PE

  

  

 

238   









 





    





 



 





 



  





 





 

 



 

    



  

  

  







  

 



  



 





 

 



 



 

    

  



   













 







 

 

  



 

  









 



  

 







                                                   

                                                                                       



 

  











 

E



 



R







 

Arias: Heat Index

SC O









 

U



 

R

235  

Full score

SA L

22







 

  



    



 







 

       

  



 

       

   

   257

      

         









       

  

    

  

    

  

  

 

       

 

   

     

      

     

         

PE

R

U

264              

    

 

 





   



    





    

     















  

  

         

       

         

    



                      



   





     

  

     

  



           

                      

         

             





           









254 

262      

                   

   

  

SA L





E

 



R

249    

23

Full score

SC O

Arias: Heat Index

  





  



      

     



      





      

24

                 

      



  



     

  

  



     

280                    

 

          

               

           

      

             

 

 

   

     





      

      

     

     

283                                 

                           



                             

                                   

R

U

            



    

   

SA L

 

  





E



          

R

 



SC O

272     

 

Arias: Heat Index

Full score

PE

289                                                                                                                                                        287

Arias: Heat Index

Full score

 

308







         







 

310                 

                             

   

 

              

R





            







                   

       sub.











           

 





        

                        

   

             



        

                     

U

           







SA L



          





E

                             



303   

R



       

SC O

296          

25

              

             

           

        

PE

322                                320                                

                                                                                                                                     

    

 

          



                  



               

26

336            



     



  



 



  



              









     



























 



 











    

   



   







  





          

E

         

          

  

  

PE

    342

  

  

          



  







  



SA L





         



U









R











  



  

R

                                          



SC O

332     ritardando poco a poco   331                                      

Arias: Heat Index

Full score

            



  





 











   





Pastoral  = 60

 



 



 

 

















348    

  

   

  

 

 



     

 



        cresc. cresc.

 

cresc.



cresc.





   

  

   

 

    







 



   

       

 





 

   



356                





      





 

              

         

   



     

       















   

      





 











 







 



 

   

 



 

PE

361   

R

U

SA L

   







                                                                                                  sweetly                                                          



 



27

accelerando poco a poco

E

  



R

349    



Full score

SC O

Arias: Heat Index











  







With Intention  = 126







   











 

                                                               







 









 



 



 

                

28







      

 

 

 



  





  

 







          

PE

R

U

SA L

    













  





 





     





E

 





           

R



SC O

366  

 

Arias: Heat Index

Full score







Tempe, AZ | April 8th 2025

R

PE U SA L R

SC O

E

R

PE U SA L R

SC O

E

R

PE U SA L R

SC O

E

E R SC O SA L U R PE www.justatheorypress.com