So I stumbled upon this video here https://www.youtube.com/watch?v=ddc04j-9VyM&list=PLDE480538877F9689&index=4 and I noticed that the track that plays in both battles, differs from the actual tracks played during them. I got intrigued by that track, and I tried to find it, but I can't recognize it and let's say I've had no luck, even looking track by track in the DMC1 OST isn't helping me much, so I wanted to ask if any of you knows the track that is played on that video?

Thanks in advance