Jack Black is not a studio engineer. However, his half-brother Neil Siegel is an extremely successful engineer, and was instrumental in developing the technology that lets the GPS on your phone auto-orient.
Black and Gass are professional performers, and understand the extra little polish that something like being slightly twisted up in cables can add.
This sounds a bit like Stairway To Heaven, a song often described as being one of the greatest songs in the world, but the inspiration for Tribute actually came from Metallica. Black played One to Gass, describing it as “the greatest song in the world”, and after listening to it the pair decided to write a song that was even better. Finding themselves unable, the idea of a tribute was born.
Tenacious D’s first show in 1994 consisted solely of this song, and included a section where the audience were enlisted to help decide on the band’s name. Other options were Pets Or Meat, Balboa's Biblical Theater and The Axe Lords Featuring Gorgazon's Mischief. The name Tenacious D (a basketball term coined by commentator Marv Albert referring to a tenacious defense strategy) didn’t win the popular vote, but was adopted anyway. Comedian David Cross was at the show, and put Black into his HBO comedy series Mr Show. Also in Mr Show was Maynard James Keenan, and Tenacious D found themselves opening for Tool in 1995.