Sample definitions from our upbeat Musipedia

Accent: A mishtake.
Baroque: Badger (Or in US pronunciation: having no money.)
Barcarolle: Bundle of notes.
Breve: Inhale.
Clef: Precipice.
Dissonance: Insult to aunts.
Gong: Departed.
Keyboard: Fed up with key.
Lute: See viol.
Madrigal: Cross royal.
Metronome: Underground dweller.
Piu: Blind character in Treasure Island.
Spinet: Make it rotate (Alt: already consumed.)
Viol: Nasty.