Macklemore and Ryan Lewis are hot on it right now. Following up the craziness of Thrift Shop their new single, from debut album The Heist, "Can't Hold Us" blazes. We'll see if it's hot enough to get them a second hit. See them perform it live below. Also added to the playlist this week is a trifecta of young ladies partying it up. Demi Lovato, Taylor Swift, and Carly Rae Jepsen all have new stuff. Check it out.