RJD2 (born Ramble John "RJ" Krohn; 27 May 1976) is an American music producer and musician. RJD2 was born in Eugene, Oregon and raised in Columbus, Ohio. He currently resides in Philadelphia, Pennsylvania. He was signed to the Definitive Jux label where he released two largely instrumental hip-hop albums and has produced tracks for many prominent rappers. However, he has now left Definitive Jux and has signed with XL Recordings. His 2007 album, The Third Hand, is a striking departure from his usual style and features Rjd2 singing and playing instruments on nearly every track.In 2009, Rjd2 established his own label, RJ’s Electrical Connections and reissued three early records as well as a box set. Rjd2's new full length More Is Than Isn't was released on October 8, 2013 on his new label, which is distributed by The Orchard.Rjd2's work has been used heavily in media and advertisement, particularly the singles "The Horror" and "Ghostwriter". Since 2007, Rjd2's "A Beautiful Mine" has been the opening theme for AMC's Mad Men.BiographyKrohn originally began his career in Columbus, Ohio, DJing in 1993 with a pair of turntables bought from a friend. He went to high school at Fort Hayes Metropolitan Education Center, where his mother taught dance, and graduated in 1994. He claims his name originates from another friend who referred to him as "Rjd2" (a play on R2-D2) in his raps, and the name stuck. Originally working the role of DJ in the Columbus rap group MHz, he later signed to Bobbito Garcia's Fondle 'Em label, releasing the self-proclaimed "mix CD" Your Face or Your Kneecaps. A year later he signed to El-P's record label Definitive Jux and released his solo debut album Deadringer to much acclaim. Rjd2 later collaborated with Columbus rapper Blueprint under the name Soul Position, releasing Unlimited EP in 2002 and 8 Million Stories in 2003. He released his second solo album Since We Last Spoke on Definitive Jux in 2004 and released Soul Position's second album Things Go Better with RJ and AL in 2006 under Rhymesayers Entertainment label. He still continues to produce tracks, working with many independent rappers, such as Copywrite, Cunninlynguists, Cage, DOOM, Diverse and Aceyalone. He contributed a cover of "Airbag" by Radiohead for the 2006 album Exit Music. 2006 also saw the release of the collaborative record Magnificent City with Aceyalone. Magnificent City includes "A Beautiful Mine", which samples Enoch Light's rendition of "Autumn Leaves", and has been used in the titles of Mad Men. In 2007, he released the solo album The Third Hand on XL Recordings, which he toured for extensively in '07 and '08.In 2009, Rjd2 established his own label, RJ's Electrical Connections, and reissued Your Face or Your Kneecaps, The Horror, and Since We Last Spoke as well as a box set entitled 2002-2010. Rjd2's new full length The Colossus was released on 19 January 2010 on his own label, which is distributed by The Orchard. On 7 January 2010 a music video for "Let There Be Horns" premiered on Pitchfork followed by a video for "A Spaceship for Now" on 3 March 2010, directed by Michael Ebner, via SPIN Magazine. In 2010, Rjd2 remixed indie rockers Yo La Tengo's single, "Here To Fall" for the Here To Fall Remixes EP which included remixes by De La Soul and Pete Rock.On 1 February 2011, Rjd2 released the album We Are the Doorways under the pseudonym The Insane Warrior, on RJ's Electrical Connections.His latest project is "Icebird", a collaboration with Aaron Livingston, one of the leaders of a Philadelphia-based band called "The Mean". Their album Abandoned Lullaby was released 11 October 2011. Livingston previously appeared on The Roots albums The Tipping Point and Undun.In June 2013, Rjd2 announced that his next album More Is Than Isn't would be released on 8 October 2013. The first single off the album titled "Her Majesty's Socialist Request" was revealed 29 July 2013.