New York - Universal Music Group's Island Def Jam Music Group has announced plans to launch a mobile radio subscription service powered by mSpot. The IDJ Radio service will charge an as yet undisclosed monthly fee, and eventually be available through multiple carriers. The service will focus on contemporary hip-hop/R&B, old school/classics, Reggaeton/Latin hip-hop and special programming by featured Island Def Jam artists and artists on other labels, and also offer on-demand videos. Palo Alto, Calif.-based mSpot's mobile radio services already stream more than 100 channels of music, news, sports, finance, weather and talk radio to mobile phones in North America.