In a take on The Peaceable Kingdom, BG236 advertised quintessential San Francisco band, Country Joe & the Fish. Country Joe was a local favorite who could be counted on to give fans performances everything from psychedelic freak-outs to a politically incorrect protest rally.
During his Fillmore era, from 1969-1971, Singer created more posters for Graham than any other artist. Singer's posters are notable for his use of collage, incorporating thousands of images clipped from magazines spanning several decades. He developed a format that included a stunning variety of lettering styles, applying them in close relation to the theme or subject of a poster.