Deep Purple Mark 2 perform 'Mandrake Root' live for their Southbank TV performance on the 28th July 1970 at South Bank Queen Elizabeth Hall UK. With a phenomenal extended improv ending giving it all the antics of a true rock band - trashing the equipment and leaving the stage in a cacophony of noise - rock n roll! Ian Gillan spoke to Melody maker at that time "The Southbank thing was great, we