Lucidity doesn't just look impressive, it also is sounding really good, if this soundclip is anything to go by. The theme is composed -- or re-imagined as it is -- by Jesse Harlin, who of course got quite a bit of attention for his excellent work on The Secret of Monkey Island: Special Edition.
Oh, and the lyrics are in Swedish. Although it sounds suspiciously like they're being sung by a Norwegian pretending to being a Swede.
Update by Zaarin: Jesse Harlin has updated the blog again with another piece, “Carte d’Etoile” (or “Star Map” in English) which will play on the map screen of the game. He's also uploaded the sheet music to the piece and suggests that anyone who can play the piano should record themselves playing it and send them a link. Now go tickle those ivories!