Soulful K.K. is a K.K. song. It plays a soulful piano with another instrument giving it almost a blues feel or someone wondering about life. It's name may get confused with K.K. Soul. It sounds like Lean on Me by Bill Withers. Yuka, Nicole, Marina, Tipper, Dora, Pierre, Spork, and Apollo will play this song if they have a stereo in their house.