A headstone-shaped collage advertised British bluesman John Mayall and Jazz guitarist Larry Coryell. Also featured were British-born Duster Bennett, making his name as a Blues-rock singer/harmonica player, and recently formed Argent.
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.