Sockpuppet! Seems like years since I last saw you round this way... good to hear from you!
I'm still waiting for the clip to load (our internet's capped to dial-up speeds until tomorrow), but I'm keen to check out your discovery. The fact that the track is labeled "ROLLERCOASTER MIX 1993" makes it seem almost beyond the possibility of a coincidence; obviously Disco Train's the roller coaster theme from DKC2... and the track being released in 1993 means it would've had peak exposure in the years leading up to the game's production. Even without hearing a second of the track, I think it's safe to say you've picked the inspiration for Disco Train.
Oh, come on, internet...
Edit:
Finally! Anyhow, I think you might be right that this track provided inspiration; all of the references you pointed out do sound fairly similar... still, call me a fanboy, but I must say that compared to those original tracks by Deadly Sins, I do
vastly prefer the funky jam David Wise came up with.
I've updated the
original post with this new discovery, and will be checking out the previous suggestions in this topic
as soon as possible!