PORTSMOUTH, R.I. — Two months before his death, Jimmy Buffett walked onto the stage at Sunset Cove in Portsmouth, Rhode Island, to the shock of a few hundred unsuspecting fans. It would be his last public performance. On July 2, 2023, Buffett joined longtime collaborator Mac McAnally and percussionist Eric Darken during “It’s 5 O’Clock Somewhere.” As the crowd cheered, the “Margaritaville” singer strapped on his guitar and led a six-song set that closed with his signature anthem. Video of the mo