The "world’s loudest pirate speed metal band," according to Guybrush Threepwood (Dominic Armato), protagonist of the 2000 LucasArts computer game Escape From Monkey Island. Unfortunately, they are only mentioned in passing, and we don't get to hear their music.
Guybrush: “Dudes! Aren’t you the founding members of Keelhaul, the world’s loudest pirate speed-metal band?”
Carla: “Not likely. Neither of us can carry a tune.”
Guybrush: “Neither can Keelhaul.”