A pitched percussion instrument (also known as a melodic or tuned percussion instrument) is a percussion instrument used to produce musical notes of one or more pitches, as opposed to an unpitched percussion instrument which is used to produce sounds of indefinite pitch.

An unpitched percussion instrument is a percussion instrument played in such a way as to produce sounds of indeterminate pitch, or an instrument normally played in this fashion.

A keyboard percussion instrument, also known as a bar or mallet percussion instrument, is a pitched percussion instrument arranged in the same pattern as a piano keyboard and most often played using mallets.