GameSpot - Review
Review, by Jeff Gerstmann: "Parappa may have been first, but since we last saw the hip-hop hound, tons of more-complex music games have been released." [Score: 6.6 out of 10]
PlanetPS2 - Review
Review, by Andrei Alupului: "Parappa the Rapper 2 is short, easy, and fun." [Score: 81 out of 100]
Sony
Official site. Includes game information, music, downloads, and games.