The first time I ever played jazz was last year, when I started a CU.
Jazz teaches you to read unlike anything I've ever tried.
And about it ruining your sound? FEH. When you want to get "the" trumpet sound, you have to hear the LA commercial guys of the 60s. WALL OF SOUND. They didnt need no ****ed microphones.
Tutti's trumpets is a GREAT album to have when someone argues the use of jazz when they focus on concert trumpet.
Van