The song is the title song to their first album 'Phantom Power', and features Brown Eyed Girls' Ga In's voice. The album contains 11 songs including "Seoul Lonely", solo songs from all three members, and more. Ga In's voice mixes perfectly with Sanchez' voice in the chorus, and the song rounds out with Kiggen and Hanhae's rapping.
The MV is directed by Moon Seung Jae, the same person behind Verbal Jint's "You Deserve Better" and "You Look Good" as well as Ailee's "I'll Show You".
Check out the MV above as well as the other songs on the album in the playlist below!