Hi....My name is Allen Stalker I am 13 years old...i have just started jazz band at our school this year, but i have been playing the trumpet for 5 years, i was wondering anyones opinion about wich mouthpiece that I sould use for jazz band (trumpet)

i think its not the mouthpiece you should change, but use a little vibrato, or try playing the mellow slow stuff on a flugelhorn. also, a wah-wah mute might be something to think about.