Karp was raised in Calabasas, California. After a brief stint in hip-hop at 11 years old signed for management to Ice-T's Rhyme Syndicate, Karp entered the Roll Call freestyle competition on Los Angeles radio station Power 106, during his time at USC, where he lasted a record 45 days on air to become the show's all-time champion. Karl created a demo exhibiting his satirical style and tightly wound rhymes. He eventually signed with Interscope Records for what he said was a million dollars, where he recorded what was to be his debut album, "Your Housekeeper Hates You", which included guest appearances by Redman, Kanye West, will.i.am, DJ Quik, Fabolous, Mýa, Sugar Ray, DJ Clue, and MC Serch. However, Interscope informed Karl that his album could not be commercially released due to scheduling conflicts and he decided to leave Interscope. Jensen released his memoir, "Kanye West Owes Me $300 (and other true stories from a white rapper who ALMOST made it big)", detailing the entire experience in June 2016 with Crown Books.