Blue Cheer was a San Francisco-based heavy metal group of the late 1960s. Original personnel were singer/ bass guitarist Dickie Peterson, guitarist Leigh Stephens, and drummer and ex- Janis Joplin and Linda McCartney boyfriend Paul Whaley; this incarnation has been cited as a prototypical power trio. The band was named after a variety of LSD promoted by underground chemist and Grateful Dead backer Owsley Stanley; this variety of LSD took its name from a popular laundry detergent.