Musical instrument
From Tardis Wiki, the free Doctor Who reference
A musical instrument was an instrument created or adapted to make musical sounds.
A guitar was a musical instrument that could play chords. (PROSE: The Left-Handed Hummingbird)
Acting on behalf of Henry van Statten, Adam Mitchell paid 800,000 dollars for an alien device which the Ninth Doctor revealed to be a musical instrument. (TV: Dalek)