funk, electronic dance, rock, acid jazz, and trip hop. The main theme of the game is called "Let Mom Sleep". The North American version and international rereleases add metal songs. The 2012 port omits "Yappie Feet" and "Many Styles" for licensing reasons. The music has been described as energetic, rhythm-heavy, defiant, and multicultural. Most of the soundtrack was composed by Hideki Naganuma, with additional tracks by Richard Jacques, Deavid Soul, Toronto, and B.B. Rights. Naganuma attempted to match the visual style, and experimented with voices, cutting, and rearranging samples to the point that they became nonsensical. In 2012, Naganuma said Jet Set Radio and its sequel had been his favorite projects. Smilebit worked with Sega of America and Sega of Europe to include as many street culture elements as possible, hoping to create music that was internationally acceptable. Jet Set Radio Original Soundtrack was distributed by Polydor Records on December 20, 2000, in Japan. For the HD release, a new soundtrack was distributed by Sumthing Else on September 18, 2012, for North America and Europe and contained additional tracks from the sequel, Jet Set Radio Future. A second soundtrack for the HD version, Jet Set Radio: Sega Original Tracks, was distributed by Sega and released on iTunes on October 3, 2012. Promotion and release Jet Set Radio was released in Japan on June 29, 2000. In North America, it was released on October 31 as Jet Grind Radio due to trademark problems for "Jet Set" in the United States at the time. The PAL version was released later on November 24 under the original name. The North American and PAL versions contained two new maps, new songs, and other in-game content designed to increase the game's appeal to Western audiences. To promote the North American release, Sega of America held a "Graffiti is Art" competition for contestants to enter their own graffiti art pieces to Sega. Sega chose five finalists and flew them into San Francisco, California on October 21, where they competed to make graffiti art pieces on a canvas within a 3 and a half-hour timeframe for a prize of $5000. Mayor of San Francisco, Willie Brown discovered the competition and attempted to revoke Sega of America's permit, but was unsuccessful due to obtaining the permit legally. Sega re-released the game in Japan under the name This version was released on October 18, 2001, in Japan via Dreamcast