Shinhwa's Eric finally got to see his new girl group�STELLAR make their stage debut through today's episode of�Mnet's 'M! Countdown'. Their title track "Rocket Girl" was composed by Kim Do Hyun (of Hyori's "10 Minutes" fame). Described to be a song with an electro-house style, "Rocket Girl" will not only show off the members' individual charms, but Eric's as well, since he included some raps in the song. Check out their debut below! [gallery] Source: Naver Music