Mariah CareySinging superstar Mariah Carey is blasting reports she has had a falling out with Janet Jackson and stalled a planned duet, insisting the collaboration was nothing more than a "concept" by producer Jermaine Dupri. According to Dupri, who is also Jackson’s boyfriend, the two pop divas have been planning to team up for years, but Carey insists that’s not the case. She says, "That was Jermaine’s concept… I love J.D., he’s like my brother but he makes these things up and he gets an idea and then he tells the world."
