Artist Randy Tuten designed the lettering behind David Singer's collage, which was used for the cover of Santana's eighth studio album. The oversized poster has become quite popular, even gracing the pages of The Art of Rock (AOR 4.117).
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.