I recommend The Cure after this.
It's also a wonderful way to renew, continue, and extend your experience with the game after you've worked completely through it three or four times. As an added bonus, the packaging has high production values, so you get a cool CD case, useful and interesting liner notes, and beautiful illustrations that complement and deepen the game.
But the music stands on its own apart from the game. If you enjoy music that will let you momentarily drift away to beautiful, distant worlds, you will love this soundtrack.