EXCLUSIVE: Randy Jackson has sold a siblings singing competition show to MTV. Basing itself off groups with siblings like the Jackson 5, the Beach Boys, Hanson and The Jonas Brother, the untitled series will feature groups with siblings in them competing against each other. The Jackson-produced show, which is early stages of development, is getting ready to start casting and looking for family bands and groups, a source said. The American Idol judge’s Dream Merchant 21 Entertainment has partnered on the project with DiGA, the production company of former top MTV executives Tony DiSanto and Liz Gately, which is backed by Ben Silverman’s Electus. The sibling series expands Jackson’s relationship with MTV, where he executive produces America’s Best Dance Crew, currently in its seventh season.

Jackson’s future on American Idol, where he has been since the start, is unclear as none of the judges have deals beyond this past 11th season. But he is keeping busy on the producing front with the MTV siblings show, ABDC and the previously announced  VH1 series Aptitude Test, an alternative career show for celebrities from Dream Merchant 21 and Shed Media. Jackson is also co-producing a Sony ATV film about country star Charley Pride, with Dwanye “The Rock” Johnson attached. Pride’s manager John Daines will also produce along with Johnson and Jackson. Keeping his hand in the music world, the Grammy-winning Jackson is starting work on producing a new Mariah Carey album.

Deadline's Dominic Patten - tip him here.