Off their 1966 album Pet Sounds Sloop John B was a West Indies folk song called the John B. Sails. It was the Kingston Trio’s version of the song The Wreck of the John B that influenced Brian Wilson’s version. Wilson modified the chord structures and turned it into the version that made it one of the Beach Boy’s most memorable hits.
Relient K staying true to Brian Wilson’s vision of the song does an excellent cover of this classic song. Enjoy.