After taking a brief break from the scene, female soloist�Sori returns to the stage of Music Bank this week with her fourth digital single, "Dancing Heart!" Known for her powerful dance performance, Sori returns with a powerful emotional ballad, which is intended to showcase her deep vocals. Bolstered with beautiful lyrics penned by poet Won Tae Yeon ('My heart is dancing,' 'My tears are dancing'), the song also features a unique background sound of guitar and accordions. Tying everything together are Supreme Team's explosive raps. Without further ado, check out Sori's comeback performance with Crispi Crunch below.