New boy group Seven O'clock has released the full MV for their debut title song, "Echo"!
Consisting of A-Day, Vaan, Hyun, Younghoon, Junggyu, and Taeyoung, Seven O'clock's debut mini album 'Butterfly Effect' contains a total of 5 songs, including the title track and "Time Machine", written and composed by leader A-Day.
Seven O'Clock will be kicking off their promotions with a debut stage on Mnet's 'M! Countdown' on March 16. Do you like the sound of their debut title?