Cheato's Music Glitch is a glitch in Banjo-Tooie. The glitch happens when you stand next to Cheato while his theme plays. Shoot a Clockwork Kazooie Egg and take it outside the lair. Have it explode, and they you'll cut back to Gruntilda's Lair and voula. The Spiral Mountain theme plays while you stand next to Cheato instead of his own theme.
It's unknown if this could work with any music as the Clockwork Kazooie Eggs only last for 20 seconds, and then they explode automatically. But it could be possible.