Legacy of Delia Derbyshire

"Carnival of Light", originally known as "Untitled", is an unreleased avant-garde recording by the English rock band the Beatles. It was commissioned for the Million Volt Light and Sound Rave, an event held at the Roundhouse in London on 28 January and 4 February 1967. Recorded during a session for the song "Penny Lane", "Carnival of Light" is nearly 14 minutes long and contains distorted, echo-laden sounds of percussion, keyboards, guitar and vocals. Its creation was initiated by Paul McCartney's interest in the London avant-garde scene and through his connection with the design firm Binder, Edwards & Vaughan.