(Cover) - EN Showbiz - Radiohead are releasing two previously unreleased songs on seven-inch vinyl singles to support independent record stores.

The band is taking part in Record Store Day - an initiative to boost the dwindling sales of small music shops, which will be celebrated tomorrow.

Two thousand copies of Radioheads songs Supercollider and The Butcher will be dedicated to the international campaign.

Over 1,000 record stores on four continents have signed up for the annual celebration of independent music businesses.

Other artists taking part in Record Store Day are the Beastie Boys, Gorillaz and Tinie Tempah.

A host of top music acts are set to make appearances at a selection of stores around the world to sign autographs and perform sets this weekend.

Acts including Adele, The Flaming Lips and Big Star will also release special edition tracks.

The Rolling Stone have decided to release a seven-inch edition of their hit Brown Sugar. (C) Cover Media