The music for every boss fight in Banjo Tooie has a melody from the level that it is in.
Targitzan - Mayahem Temple
Old King Coal - Glitter Gulch Mine
Mr. Patch - Gruntyworld
Lord Woo Fak Fak - Seaweed Sanctum
Terry - Terrydactyland
Weldar - Gruntilda Industries
Chilli Billy and Chilly Willy - Halfire Peaks
Minjy Jongo - Cloud Cukooland
Hag 1 - Cauldron Keep (VERY hard to hear, but it IS there… I think), and also Gruntilda’s Lair!