Beatles material appears online

UNRELEASED material by the Beatles has appeared on the internet.

Fans can listen to the new version of Revolution 1, which is supposed to be 'take 20' of the song, through YouTube.

The song previously appeared in two different incarnations, an electric Revolution, and a slowed Revolution 1, but a third, Revolution 9, written by John Lennon, appeared on the second side of the 1968 double album The Beatles, commonly known as The White Album.

It appears to bridge the gap between the band's Revolution 1 and Revolution 9, although the main difference with the new version is the length, running to seven minutes longer than the original.

Although it doesn't differ lyrically and structurally, the second half of the unreleased version is made up of tape loops, vocal effects and some studio trickery.

It begins with the four-piece talking in the studio, with Lennon overheard saying in a high-pitched voice, "take your knickers off and let's go", before the song starts.

It also features five minutes of backwards screaming and singing from the band and as the song approaches ten minutes, the song breaks down into a barrage of speech from Lennon and Yoko Ono.

Although it has yet to be officially confirmed as being authentic, fan blogs online have posted up the song, with many hailing it as 'the holy grail' of unreleased material.