Transposing instruments like clarinets, saxophones, trombones, and trumpets perhaps requires an explanation for all who don't understand that concept. Also, why would they be made that way?

Billy


“Amazing! I’ll be working with Jaco Pastorius, Charlie Parker, Art Tatum, and Buddy Rich, and you’re telling me it’s not that great of a gig?
“Well…” Saint Peter, hesitated, “God’s got this girlfriend who thinks she can sing…”