No one understands the drama of a bad breakup better than Ailee, K-pop's queen of R&B. Every one of her songs is like an epic relationship story played out on the big screen. Since her debut in 2012, the American-born vocalist has only improved as a singer, and now every new video or single is an event for fans of K-pop. Don't let her fragile emotional themes fool you. This girl can really sing, and she proves it with a sterling set of power ballads, slow jams and uptempo anthems.