In March 1970, Davis began to perform as the opener for various rock acts, allowing Columbia to market Bitches Brew to a wider audience. Although he was so offended by Clive Davis's suggestion to perform at the Fillmore East that he threatened to switch record labels, Davis eventually shared a bill with the Steve Miller Band and Neil Young on March 6 and 7. Biographer Paul Tingen wrote: "Miles's newcomer status in this environment" led to "mixed audience reactions, often having to play for dramatically reduced fees, and enduring the 'sell-out' accusations from the jazz world", as well as being "attacked by sections of the black press for supposedly genuflecting to white culture."
This is a pristine version of the original first printing poster advertising the only time Miles Davis and the Grateful Dead appeared on the same bill and it was a month on the heels of the release of Bitches Brew, the most popular Miles Davis album made with Chick Corea and other jazz all-stars. Miles thought most of the rock and rock musicians were hooey. But when he met Jerry Garcia, Jerry began complimenting Miles and clearly was very familiar with his music and style and, likewise, Miles considered the Dead to be worthy players.