At the Box Friday night, Jay-Z announced that New Orleans’s critically lauded, semi-underground rapper Jay Electronica, who’s also the father of Erykah Badu’s child, is the latest signee to Jay’s Roc Nation label, distributed by Sony. “My name is Jay Electronica and my mama is here so you can’t tell me shit,†Electronica explained. Despite popular singles, Electronica has yet to put out a full-length album, which will soon change. [MTV]