Bob and John

 Two friends that could really put together a song.

Dwight, Buck and Merle

 Who has the best hat?

Jimmy Buffet

 Jimmy has gone to Margaritaville. RIP Jimmy, and thanks for all the great tunes.

Gerry and a guitar called Jack

 Walnut with a Western Red Cedar top. You've got to hear it to believe. Thanks Gerry!!