Musical instrument

Musical instruments are things used to make music. Anything that somehow produces sound can be considered a musical instrument, but the term generally means items that are specifically for making music. 

Musical instruments can be divided by type into:
 string instruments (plucked or bowed)
 wind instruments
 woodwind
 brass
 percussion instruments
 keyboard instruments

An orchestra has instruments from four families:
 bowed string instruments (e.g. violin)
 woodwind (e.g. flute)
 brass (e.g. trumpet)
 percussion (e.g. drums)

Some people think that the voice is a "natural musical instrument" because singing is a way to make music without any instrument at all.

Related pages
Instrumental