RJD2 is an American musician based in Philadelphia, Pennsylvania. He is owner of record label RJ's Electrical Connections. He has been member of groups such as Soul Position, MHz Legacy, and Icebird. In 2002, RJD2 signed to El-P's record label Definitive Jux and released his solo debut album, Deadringer, to much acclaim. RJD2 later collaborated with rapper Blueprint under the name Soul Position, releasing 8 Million Stories on Rhymesayers Entertainment in 2003. He released his second solo album, Since We Last Spoke, on Definitive Jux in 2004. Soul Position's second album, Things Go Better with RJ and AL, was released in 2006 under Rhymesayers Entertainment. 2006 also saw the release of Magnificent City, his collaborative album with rapper Aceyalone. Magnificent City includes "A Beautiful Mine", which has been used in the titles of Mad Men.