Almost all brass instruments have movable tuning slides, but the only one that is played by moving a slide is the trombone.
A trombone is a brass instrument played with a slide.
Trombones are played by moving a slide, while other brass instruments use valves to change notes.
A trombone is an instrument that is played moving a slide back and forth.
Unlike the rest of the brass family, trombones change notes by moving a slide instead of using valves.
The trombone has a slide that can be moved to change the pitch of notes rather than valves or keys that lengthen the tubing to change the pitch of notes like other brass instruments. And there are a lot more than 3 other brass instruments.
a trombone is played by blowing air in the thing and moving the slide
All brass instruments (except the sousaphone) have slides. They are used to adjust the pitch, sharp of flat. The instrument that is played using a slide is the Trombone. It also has a slide on the back that is used to tune, or adjust pitch.
A trombone has a slide, which other brass instruments lack.
That would be the trombone. The trombone has a main slide instead of valves to alter the length of tubing that the vibrating air has to travel through to change the pitch of notes. All brass instruments have tuning slides to slightly lengthen or shorten the tubing length to help tune the instrument.
A slide
That's the trombone.