Where can you hear audio archive material as diverse as Gilbert and George's first public interview, JG Ballard on his passion for surrealism, Laurie Anderson talking about art and commerce in O Superman, and Yoko Ono 's 1962 sound-art work Cough Piece? At the Tate Gallery's Hyman Kreitman Research Centre. Verity Sharp is our guide through this audio exhibition of artists talking about their lives, working methods and art. Producer Alan Hall We take our own guided tour: page 121