To be fair, the piece remixed in that video is one of the only “traditional” musical tracks in the game, and I think the remix works pretty well. But I share your concerns: I hope that the later parts of the game, where music is replaced with weird sounds and background noises, retain the wholly alien feeling of the original.
Metroid 2 is relatively forgotten compared to Metroid and Super Metroid, but its graphics and sound build up a sense of tension and uneasiness in a way that they don’t match, I think. This blog post articulates my feelings on the music of Metroid 2 pretty well: http://www.jonas-kyratzes.net/2007/03/15/the-music-of-metroi...
Thanks for sharing that post. It echoed many of the thoughts I'd had about the game. The sheer genius of Metroid 2 is how well it juxtaposes the ruins of a lost civilization with the sheer alien horror of the "jungle" that is taking over. The music and sounds don't just complement that, they play a starring role in the creation of that tension.
Eh, to each their own I suppose. I was really excited about this remake when I saw the graphics. Watching the video you linked dampened my enthusiasm.
I grew up on Metroid 2. I remember playing it outside the principal's office in school! The music is dark and haunting and unlike anything I've heard since.