Revelation was the over-arching theme of Singer's melodramatic poster. The composition played off the names of British rockers, Clouds, and folk group, Georgia Sea Island Singers, and was a good example of the depth of his work. Headliner Jethro Tull, led by guitarist/vocalist/flautist Ian Anderson, was a very popular live attraction throughout the 1970's.
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.