Although they filmed their debut music video back in May, the debut date for Eric's girl group Stellar was subsequently delayed due to member Kim Ga Young's role in the KBS drama, 'Spy Myung Wol'. But with the drama at its mid-way point, Top Class Entertainment has decided to debut the group finally and released their MV teaser for their title song, "Rocket Girl". Apart from Kim Ga Young (who is arguably the most known member thus far), the other members of the group are Lee Seul, JOA and Jeon Youl. Their debut album was produced by composer Kim Do Hyun (of Hyori's "10 Minutes"), and Eric acted as the album's director. Eric also rapped in the girls' debut track, "Rocket Girl", in addition to appearing in their music video. Check out the MV teaser below! Stellar will make their official debut on August 25th, so stay tuned to allkpop for updates!