As always, Lou Rawls' opening song for the special, this one done in a definite blues style.
The music that plays during the escape sequence in "Lab Animal" sounds like something out of an action thriller from the 80's.
The song that was composed in "Court Musician" has a jazz vibe to it.
Hilarious in Hindsight: Live A Live later used this concept to more complex levels. What really sells it is that each boss is a variant on "Odio," which is "hatred" in Spanish/Portugese/Italian. Considering what happens in that game, Garfield is going to have to watch his back.