Timmy & the Lords of the Underworld is a bonus song in Rock Band. It was made by the creators of the television show, South Park. The guitar and drum parts are very hard to do, unless you are in the lower difficulty. In the game, the band is listed as 'Timmy & the Lords of the Underworld'. It is in the last tier for the Guitar and Vocals, the 7th tier for the Drums, and the 4th tier (File:Fcircle.pngFile:Fcircle.pngFile:Fcircle.pngFile:Fcircle.pngFile:UFCirlce.png) for the Bass.