Michiru Yamane got a lot of static for mixing baroque classical with club beats in that game, but I really liked it.
And it's not just the song itself, it's the usage. You slog through hours of game, you finally get to throw open a set of huge wooden doors leading to the end boss, and *that* plays. That's right up there with Theme of Simon kicking in when you get Drac on the ropes in SCV4.