A player on a slide trombone changes the pitch of the notes by lengthening and shortening the tube while he blows through it.
The Policeman took the saxophone, and the German the slide trombone.
For a year we had Mason Peters, who was a wonder on the slide trombone.
He love very much the man what play the long horn like this'—she indicated a slide trombone.
"Like some one who doesn't know how, trying to play the slide trombone," she commented.