Davis, Miles. (1926–1991) & The Grateful Dead. (1965–1995) Two 1970 TicketsTwo tickets from the April 912, 1970 performance of the Grateful Dead and the Miles Davis Quintet at Fillmore West, San Francisco. Very fine. Each 2. 5 x 4. 5 inches (6. 3 x 11. 4 cm). It was a memorable moment of cultural interchange when Miles Davis opened for the Grateful Dead in April 1970: jazz and acid rock colliding as Davis experimented with new compositional forms. In his autobiography, Phil Lesh of the Grateful Dead recalled: As I listened,