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]