Virtua Fighter 3TB Dreamcast Secret music codes?

You know that Virtua Fighter 3Tb on Dreamcast has lots of great unused music (Cool Bell, Blandish Fist etc.)
Some time ago I think read something about a code to use these songs during battles. Unfortunately I can't find it again.

Was it my imagination or such code really esists (even as a action replay code)?

 

Wait,........what? This caught my attention. O.O

 

Super late reply but you can hear these songs by selecting the alternate "Dural" stages in a Vs. match, which is done by holding start and letting time run out on the stage selection screen if I remember correctly. You can only do it in Team Battle mode on the Dreamcast version, but it can be done in normal mode in the arcade (you can see it here in some Beat-Tribe footage). One song that goes unused in matches can be found in the Dreamcast version's sound test, though.

 

Super late reply as well but THANK YOU
So after all (song 0 apart) they weren't unused music, but more like bonus music, that's great.