Island Packet — Mick Jagger has Keith Richards, Bruce Springsteen had Clarence Clemons. Jimmy Buffett’s onstage foil/sidekick has for decades been a very large, congenial ginger named Mac McAnally.

With a massive helmet of Hagar the Horrible-thick hair, dry-rubbed Southern wit and considerable tallness, McAnally does not exactly fit into the Caribbean-escapist vibe conjured up by Buffett’s beach blanket blowouts.

But since the 1990s, the Mississippi native has served as Buffett’s onstage counterpoint, guitarist and producing and writing partner. (He also has, during performances of “It’s 5 O’Clock Somewhere,” served as Alan Jackson.)