Three Hearts, Seven Seas, Twelve Moons is a bonus track on the Gorillaz' 2010 album Plastic Beach. It, alongside the songs "Pirate's Progress" and "A Very Dark Night" (from the Cyborg Noodle ident) it is played by Sinfonia ViVA.
Like "Pirate's Progress", this track is entirely instrumental and It resembles classical/swing music.
The track was used in the Promo for Plastic Beach called "Journey to Plastic Beach" and on the Murdoc Phase 3 ident.