The classic album artwork adorning Sonic Youth's sixth major album Daydream Nation will be put up for sale at Sotheby's in London next week. Avant-garde German artist Gerhard Richter's photo-painting, Kerze (Candle), is likely to sell for several times its catalogue price of £2.5m. Last year, the band re-released a deluxe version of the double album, complete with live versions and extra studio material. They have also embarked on a world tour, performing the album in its entirety. Sonic Youth memorabilia fans with a spare few million to burn should head for Sotheby's Contemporary Art Evening Auction, London, 27 February.