The Diva herself, Aretha Franklin, played three nights in 1971 at the Fillmore West. Recordings of those sessions were released as "Live at the Fillmore West" and became one of her best albums. The gig proved to be memorable for the opening band, Tower of Power, too: on Saturday night, Emilio Castillo of Tower exchanged hellos with Franklin in the dressing room hallway and she said, "Tower of Power, my favorite band."
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.