Guitar
A guitar was a musical instrument that could play chords. (PROSE: The Left-Handed Hummingbird) Some guitars were electric. (TV: Delta and the Bannermen, The Magician's Apprentice, et al.)
George Harrison was the guitarist for the Beatles. (COMIC: Forever Dreaming, PROSE: The Left-Handed Hummingbird)
Trisha Tomorrow played guitar in the Tomorrow Twins. (AUDIO: Horror of Glam Rock)
Before they were absorbed, Bliss and Ursula Blake played the guitar when LINDA became a band. (TV: Love & Monsters)
Si played his guitar on the street for money. (PROSE: Loose Change)
The Twelfth Doctor was skilled at playing an electric guitar through a Magpie Electricals amplifier. (TV: The Magician's Apprentice, Before the Flood, The Zygon Invasion, Hell Bent, The Pilot)