After a long few months of waiting, the lovely Rainbow girls are finally back on tonight's M! Countdown with promotions for their latest mini album, "SO?". Rainbow has teamed up with Japan's Daishi Dance for their comeback title track, named "To Me", and it has Daishi Dance's trade mark, emotional and moving piano melody, complemented by a catchy dance beat that has definitely caught on the interest of fans of dance music. To top it off, Rainbow's strong and powerful vocals and sentimental rap lyrics complement perfectly with the flowing piano melody and house beat, making it an even catchier song to listen to. Check out their charismatic comeback stage below!