Overheard: Troy Carter + Meghan Trainor, Epic Drops Karmin, New Unplugged Pop Star Album?

Carter Is 'All About That Bass'

Post-Gaga split, Troy Carter's Atom Factory signing spree continues with the addition of Meghan Trainor to a roster that includes John Legend and Nico & Vinz. Sources say the deal was inked in June, shortly after Trainor's buzzy "All About That Bass" video racked up 100,000 views on YouTube. Carter will lead management with Atom Factory co-president Ty Stiklorius.

Epic Drops Karmin

One of the first YouTube stars to sign a major-label deal, pop-rap duo Karmin has parted ways with Epic Records, Billboard has learned. Label chairman Antonio "L.A." Reid signed the twosome in 2011 on the heels of its hit cover of Chris Brown's "Look at Me Now." An Epic representative was unavailable for comment, but Karmin is no longer listed on Epic's official artist roster.

Shhh …

Which major pop star, fresh off a sold-out arena tour, is going unplugged on her next album? Billboard hears an announcement is imminent regarding the stripped-down project and tour from a singer better-known for soaring pop hooks.