Indie-folk duo, Wardell, is the latest signing to Jay Z's Roc Nation. News was announced that Theo and Sasha Spielberg, Steven Spielberg's and Kate Capshaw's children, will join Jay Z's management group. Theo, 25, provides all the instrumentals for Wardell and Sasha, 23, provides the vocals. The duo has had quite the year. They recently released a EP, Brother/Sister, through an independent imprint this past summer and is gearing up to release their debut album in 2014.