What a crude, vulgar, hilarious movie. It starts with a cartoon segment of the two main characters creating the sound company's logo out of their own farts.... Yes. Intrigued yet? This is a musical like nothing else before it. So clever yet so stupid. So dumb yet so watchable. The songs are complete non-sense but you'll be humming and singing the words for days. Jack Black and Kyle Gass have amazing chemistry, partially because they are playing a more exaggerated version of themselves. The music is great, the jokes are so dumb they are hilarious, it is a perfect love letter to rock music!