Singer's Southwest was both pure and cruelly barren in BG182, a sharp contrast to the rocking music of split-billing B.B. King and Country Joe & the Fish at the Fillmore West.
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.