Yeah, they also covered a Sano Motoharu song called SUGARTIME back in 97ish... I think.

If I recall correctly it was a sort of tribute concert to motoharu featuring other Japanese artists. I'll see if I can dig up the full cover or at least the sample that Little buster mentioned. The orignal song is from back in the late 80s or early 90s. (I forget even though Moto is one of my favorite artists.)
[quote="rockman240"]Was one of these songs played between My Foot and Wake up!x3? I remember people talking about a new song that wasn't on Wake up!x3 or Ladybird girl.[/quote]
I'm not so sure anymore, I got confused with all the songs. Most likely there was a song that never made it back then. I'm going to ask my friend about the name of the songs, I'm sure he remembers them, but they had really cool names.
Anyways, even though I've only heard of about 3 or 4, I'm sure that there are a lot more songs that have never made it in a single or album.
-EDIT-
Also, a Motoharu song called HAPPY MAN was a big influence on the pillows when they wrote TERMINAL HEAVEN'S ROCK. There's a similarity between the two songs at least in vocals in the beginning.