A'ST1, which is under DSP Entertainment, made a comeback on Music Bank yesterday, performing "Yearning of the Heart," their OST for "Boys Over Flowers." The group had received a lot of negative attention in 2008 for challenging Super Junior by writing the words "Defeat Super Junior" on a white scroll. But shortly after, they started to kiss Super Junior's ass, saying that they "looked up to Super Junior and wanted to be just like them." But that incident has been forgiven and forgotten, and the boys are slowly came back after they sang an OST for "Boys Over Flowers" and Haiming, A'ST1's Chinese member, took on a role in the drama. Here's their performance of "Yearning of the Heart" on Music Bank: video credit: pla4rang The group is expected to release their official comeback album on April 13th. But for now, they will continue to perform their OST for about two more weeks until the release of their new album. Thanks to .gov for the tip!