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Bill Murray was the last fan standing at the Grateful Dead’s final show of their “Fare Thee Well” concert series.

About 70,000 Deadheads gathered at Chicago’s Soldier Field to hear the band’s last show ever — but a backstage source said that well after they closed with encores of “Touch of Grey” and “Attics of My Life,” Murray “stayed late and helped the stadium cleaning crew at the end of the night!”

Native Chicagoan Murray was photographed in the crowd in a psychedelic patterned shirt, along with a hodgepodge of VIPs including Katy Perry and John Mayer, “Game of Thrones” guru George R.R. Martin, David Axelrod, Sen. Al Franken, Bill Walton, Perry Farrell and Chloë Sevigny.