Former Beatle Sir Paul McCartney is offering a free song and video through iTunes for one week only.

The song, Nod Your Head, is taken from McCartney's recently-released Memory Almost Full album. The artist has also released the promotional video for the track.

Apple has released selected tracks recorded during McCartney's performance at the iTunes Festival, too. Tracks include: Coming Up, Only Mama Knows, That Was Me, Jet, Nod Your Head, and House of Wax.

In a second slice of Beatles-related news, Apple has also confirmed last week's report with the addition of a wide swathe of music and video from Ringo Starr - the first time music from the artist has been made available on a global basis.

EMI has introduced a new collection, Photograph: The Very Best of Ringo Starr and also added four back catalogue albums to those available through iTunes, including Sentimental Journey, Beacoups of Blues, Ringo and Goodnight Vienna.

Earlier this month, music from another former Beatle, John Lennon, was made available through iTunes.

Sixteen of Lennon's solo works from EMI Music were made available for the first time on iTunes, including the Lennon Legend and Acoustic collections and the albums: John Lennon/Plastic Ono Band, Sometime In New York City, Walls and Bridges, Milk and Honey and the collections, Anthology and Working Class Hero.

“John would have loved the fact that his music will now be available in a format suited to a new generation of listeners,” said Yoko Ono at the time.

Paul McCartney's decision to offer free music through iTunes has been matched recently by another major league artist, Bruce Springsteen. Springsteen is currently offering his Radio Nowhere track for free through various global outlets.

The availability of music from all former Beatles bar George Harrison is likely to inflame speculation that The Beatles back catalogue will eventually be made available online.

For the present, all eyes will be looking to Apple's special event on 5 September for further clues on this.