Idol group�ZE:A have already started promoting their follow-up track, "Heart For 2", and it's proven to be quite the dramatic change from their bubbly "Watch Out" image. This transformation was reinforced through the short music video for "Heart For 2". Playing around with the 'harlequin' concept, the MV alternates between shots of ZE:A in crisp white suits and trendy black outfits. These boys are definitely going to snag more hearts this time around, and we hope that Star Empire plans to release a full MV! Check out the short version below: