foo-foo band

noun1

1. •
   An impromptu musical band on late 19th-century sailing vessels, made up of members of the ship's crew.

   • We sighted the Jennie Harkness, obviously American, at daylight right ahead in the S.E. trades; at noon we were alongside her, and our Foo-Foo band played "Yankee-Doodle" as we passed her. — 1921