The Professor Layton games have long demanded a soundtrack a bit more sophisticated than the one they have -- the plinky, "ooh boy, we have a mystery!" music is fine at first, but eventually I've found that it begins to grate. This is especially true of the first game that I played in the series, 2008's Professor Layton and the Curios Village.
Thanks then, to the folks at Gamological Society, who have reimagined that game with an entirely different soundtrack -- the French composer Yann Tierson.
Gotta admit -- this sounds utterly lovely. Hopefully with the 3DS's larger storage space, the folks at Level-5 can afford to hire some real musicians to bring their next game to life.
Professor Layton And The Curious Village & Yann Tiersen's Le Phare [Gameological Society]