Percussionists are required to play multiple instruments in the orchestra or band, unlike other players who are limited to one instrument each.
Percussion instruments include:
Timpani
Rototoms
Mallet Percussion
Glockenspiel/Bells
Marimba
Tubular Bells/Chimes
Vibraphone
Xylophone
Auxiliary Percussion (Triangle, tambourine, etc.)
Drum Set
Snare Drum
Tom-tom
Bass Drum
Cymbal