He's name-checked in the "Seventy-Six Trombones" intro (5)
I believe the answer is:
sousa
(Other definitions for sousa that I've seen before include "John Philip --, American march composer" , "Composer of "The Stars and Stripes Forever"" , "American composer known for marches" , "US composer of marches" , "John Philip -, composer of famous marches (The Stars and Stripes for Ever)" .)