Curvilinear motion set the scene in Singer's poster devoted to the mid-week concert of British band, Traffic. Lamb was a local rock group, formed in 1969. BG241 announced different bands on the bill with Traffic, not the ones featured in BG240.
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.