Written by DCist contributor Maria Flores Sometime in the early 1970s, when the photographs in Melody Maker, NME, and Rolling Stone were no longer enough to satiate his appetite, Claude Gassian swapped his guitar for a 35mm camera and took to the road with his finger on the shutter button. So began his photographic conquest to document the lives of some of his favorite musical artists. Over three decades later, his photographs stand alone as…