Every relaxed bit of music that plays when you're just walking about is so damn good. No other game has done music like this so well. Music that isn't trying to be too fast paced, it's just setting the atmosphere.
Campbell: Raiden, the sea lice are getting fat on your rations. ss7: I did like him, like I did like becks, until he beckham crap.
I'm pretty sure that neither Resident Evil nor Tomb Raider had used any live, orchestral performances up to that point, just synth strings and such (which Shenmue mostly does as well, except for a few key, and hefty, pieces).
But yeah, I'm sure some games had used actual orchestral recordings for various tracks. I know that Panzer Dragoon and Panzer Dragoon Saga had.