Dick Nash plays lovely trombone ballads on many Mancini albums and his jazz playing is also featured on classic recordings like "Tutti's Trombones" and Pete Rugolo's "Ten Trombones" albums. Here he plays a comedic solo on euphonium. (He actually started as a euphonium player.) The scene is a couple inebriated thieves bumbling around, and it is a character I don't think I could have created!
https://www.youtube.com/watch?v=4WESAcPmb5c