Daevid Allen, a founding member of the influential jazz outfit Soft Machine and the driving force behind the prog-rock group Gong, died on Friday following a battle with cancer. He was 77. “Daevid passed peacefully in Australia today, Friday 13th at 1.05pm, surrounded by his boys,” a message posted on the Planet Gong site read. “Everything has stopped here in a house of tears. Tears first, celebration later.”