When you go out to see a band that has existed for just over forty years, there's a high chance of it sounding past its prime. It is a testament to the boundless creativity of Daevid Allen and friends, as well as to the power of heavy, undiluted psychedelia, that Gong's set at Southbank Centre's Queen Elizabeth Hall on Saturday beat the odds. Presented as part of Massive Attack's Meltdown 2008, psychedelic legends Gong......