Listen now: Ludacris returns with infectious new sex anthem ‘Vitamin D’ Oh, so you thought that Ludacris had completely left the music game to focus solely on business and film? Not even close, as the rapper today released “Vitamin D,” featuring Ty Dolla Sign. Check it out now. DeWayne Rogers I write. I create. I take photos. In my spare time, I'm also a part-time super-hero. Go figure.