Apple's iTunes Music Store is offering Oasis' brand-new "Don't Believe The Truth" album.

This week's new free Single of the Week comes from Gaudi, and is taken from the dub/nu-beat album, "Bass, Sweat and Tears". The single is called "Ayahuasca Deep Fall". Apple notes the song offers a, "hint of psychedelia and draws inspiration from the music of native cultures across the world".

Gaudi has mixed artists ranging from Bob Marley to Simple Minds; fatboy Slim to the Scissor Sisters.

Some highlighted additions today include an exclusive track and video from Duran Duran; Black Eyed Peas track, "Monkey Business", an exclusive track from James Blunt and another from Funeral From A Friend.

Music fans can also explore some new iTunes Essentials, including: UB40; the Post-Punk period of alternative music; British comedy classics and, as a bonus to iPod DJs, a chance to explore music from ads.

Gorillaz currently lead in iTunes' single and album charts.