What musical instrument does a trombonist play?
A trombonist plays the trombone, which is a brass instrument with a telescoping slide mechanism used to vary the pitch.
Complete the following task based on the instruction and optional input provided.### Instruction:
What musical instrument does a trombonist play?

### Output:
A trombonist plays the trombone, which is a brass instrument with a telescoping slide mechanism used to vary the pitch.