A capella group Red Soul made their debut on the 8th with their first mini-album Color is Red and their title track Walk Back. Now a surprising video of the boys covering 2PM's Heartbeat and Tik Tok has been released! Red Soul first made their appearance on an episode of Star King in early 2009. Since then, the boys have gained quite a lot of popularity and many fans had been anticipating their debut. Famous for their a capella skills, the boys covered 2PM as they mashed the two songs together to create an amazing medley. http://www.youtube.com/watch?v=qqro7Sbmg34 Thanks to jaelyouth for the tip!