BERKELEY, CA – MAY 15: Bob Weir performs with the Grateful Dead at the Greek Theater on May 15, 1983 in Berkeley, California. (Photo by Ed Perlstein/Redferns/Getty Images)
American Rock musician Bob Weir, of the group Grateful Dead, plays an electric guitar as he performs onstage at Nassau Coliseum (later Nassau Veterans Memorial Coliseum), Uniondale, New York, November 1, 1979. (Photo by Gary Gershoff/Getty Images)
Paul Simon performs in concert during the "Texas Strong: Hurricane Harvey Can't Mess With Texas" benefit at The Frank Erwin Center on September 22, 2017 in Austin, Texas / Bob Weir performs at the Acoustic-4-A-Cure At The Fillmore at on May 15, 2019 in San Francisco, California (Photo by Gary Miller/Getty Images; Photo by Kimberly White/Getty Images)
Bob Weir and Johnnie Johnson backstage at Laguna Seca Daze 1996 at the Laguna Seca Raceway on May 26, 1996 in Monterey, California. (Photo by Tim Mosenfelder/Getty Images)
New York, N.Y.: Jerry Garcia, left, and Bob Weir of the Grateful Dead perform at the Academy of Music in Manhattan on March 21, 1972. (Photo by Jim Peppler/Newsday RM via Getty Images)
BOSTON, MASSACHUSSETTS – Paul McCartney, left, and Bob Weir perform together at Fenway Park on July 17, 2016, in Boston, Massachusetts. (Image courtesy of Paul McCartney/Facebook)
Bill Kreutzman and Bob Weir of The Grateful Dead perform during the "Fare Thee Well, A Tribute To The Grateful Dead" on July 3, 2015 in Chicago, Illinois. (Photo by Jeff Kravitz/FilmMagic)
Paul McCartney performs in concert at Fenway Park in Boston on July 17, 2016 / Guitarist Bob Weir of Dead and Company performs at Shoreline Amphitheatre on July 30, 2016 in Mountain View, California (Photo by Matthew J. Lee/The Boston Globe via Getty Images; Photo by John Medina/WireImage)
DENVER, COLORADO – Bob Weir plays rhythm guitar in a Grateful Dead concert at McNichols Sports Arena on December 13, 1990 in Denver, Colorado. The Dead was founded and led by singer-songwriter and lead guitarist Jerry Garcia until his death (8-9-95). The band was representative of the counterculture of the 1960s. (Photo by Mark Junge/Getty Images)
