[monkeylantern]

let's not confuse copyright infringement with a felony sexual assault.

Isn't that the 11th Commandment? And the 12th is "Thou shalt not confuse a butter knife with a fish knife"

 

[monkeylantern]

I'm not entirely certain. Percentage rules certainly don't apply, as it's for commercial use (the rules that govern quoting in general). It probably depends if the quote is classed as "public domain", but for any recent song, that probably means it already was anyway.

You could probably get away with "Great balls of fire". Using "Loose yourself in the music" will probably end in a C&D letter.