BG205 was considered one of Singer's most outstanding efforts. Humble Pie featured a young Peter Frampton, and the concert was memorable for Graham's production crew because the promoter, abstemious by nature, was dosed by the Dead and ended up playing percussion on stage for three hours.
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.