David Meltzer & Clark Coolidge's Serpent Power number 28 in in Rolling Stone's top 40 of 1967...

"...Meltzer on untutored post-folk guitar, Meltzer and his wife, Tina, singing his songs, poet Clark Coolidge clattering behind on drums and the soon-vanished John Payne fixing a hole on organ, their music was minimalist folk rock with noise - the climactic, electric-banjo augmented "Endless Tunnel" goes on for thirteen minutes..."