Real and awesome:The night the Grateful Dead jammed with the Beach Boys

Bill Graham watches the Beach Boys, Fillmore East final concert,
Jerry Garcia and Carl Wilson; Pigpen and Mike Love; Al Jardine and Bob Weir; Bruce Johnston and Phil Lesh. It’s hard to imagine all those guys sharing the same stage, let alone harmonizing on Merle Haggard, Chuck Berry and more, but it really happened on April 27, 1971, right there at the Fillmore East. Here’s the bands’ crowning achievement that night: a delightfully ironic cover of Haggard’s “Okie From Muskogee.”