huh?
 

I downloaded the Japanese "TMNT supermutant legend" theme song from this Italian turtles website:

http://www.tartarugheninja.it/

While listening to it, I followed the lyrics from the official Turtles website. I think what I have downloaded might be a shortened version.

Here are 2 sets of the lyrics: The lyrics to the full version and what I heard from what I downloaded:

Full version:

Kyoudai na nazo ga uzumaku
Yami no naka e
Maki komarete mo ore-tachi
Tamerawanai
Genkai shirazu no yuuki to
Densetsu yaburi no fight ga
Koura ni afureru ze
Go! Go! Turtles
Power Up no henshin de
Go! Go! Turtles
Aku no gundan kechirasu
Ore-tachi Turtles (Ore-tachi Turtles), tatakau
Turtles (tatakau Turtles)
Noroma na kame ja nai
Punch wa One! Two! (Punch wa One! Two!)
Kick wa boom boom (Kick wa boom boom)
Chikyuu no heiwa wo mamoru tame umareta mutant
Go! Go! Turtles
Atto odoroku henshin de
Go! Go! Turtles
Yabai pinch mo gyakuten sa
Ore-tachi Turtles (Ore-tachi Turtles), kagayaku
Turtles (kagayaku Turtles)
Kokoro wo awaserya kiseki no gatai ga
Okiruze

What I downloaded:

Kyoudai na nazo ga uzumaku
Yami no naka e
Maki komarete mo ore-tachi
Tamerawanai
Genkai shirazu no yuuki to
Densetsu yaburi no fight ga
Koura ni afureru ze
Go! Go! Turtles
Power Up no henshin de
Go! Go! Turtles
Aku no gundan kechirasu
Ore-tachi Turtles (Ore-tachi Turtles), tatakau
Turtles (tatakau Turtles)
Noroma na kame ja nai
Punch wa One! Two! (Punch wa One! Two!)
Kick wa boom boom (Kick wa boom boom)
Chikyuu no heiwa wo mamoru tame umareta mutant
Go! Go! Turtles

Anime theme songs typically have two versions: a "TV-size" version (used during the opening or ending credits) and a full version (released on the soundtrack). What you downloaded was the TV-size version, so you'll need to find the soundtrack to hear the full version.

I just listened to the japanese theme song for the original toon, I'm going to have to say that I like it. It is cool because i love anime and know some japanese ( not enough to watch it raw), I still think that the german one is the coolest though :D