This page seems to say that his music wasn't used in the released version. https://www.unseen64.net/2008/04/10/k-project-rez-prototype/
Strange how memory affects us.
EDIT: And whom lucky enough to own one does not remember the Dreamcast fondly? ;) Crazy Taxi, Quake III, Skies of Arcadia, Ecco, THPS2 - I'd argue the ratio of quality software to shit software was literally almost 1:1, compared to, for instance, the PS2, where you might get 1 great game for every 10.
I just pulled my dreamcast out to play some of the games with my son. It's still a great system. There are some low quality games, but it definitely feels like you have to seek them out; as opposed to the shovel ware feeling I get on the PS1/PS2. Looking at the released game list though, I feel like some of these titles were probably good at the time, but won't hold up; but many of them are still as good as they were. VGA output is pretty nice too.
Tetsuya Mizuguchi, the producer of Rez, also worked on Tetris Effect which has an amazing soundtrack. Tetris Effect feels like a weird cousin of Rez btw!
Oh, fuck off. That's amazing. Colour me almost wanting to grab one. Wish it had a Vive port.
I'm not a fan of Tetris. I like games that have a very distinct 'beginning and end of the level' feeling.
[1]https://www.playstation.com/en-us/games/rez-infinite-ps4/
[Edit] Eh, lots of love lower in the thread. Have this instead...
If you guys haven't played it, seriously give it a shot. I believe there is a re-released version on XBOX and PC, though I can't speak to the quality of the ports, as I still play my Dreamcast almost daily. ;)