The boys were guests on MBC FM4U's 'Noon's Song of Hope', but decided to do a live on the spot rendition because the EXO boys did so well in their own corner.

The song is a difficult song to sing, especially for males, as Lee Hae Ri's range in the song is incredible. However, Hyungsik, as one of the best singers of ZE:A, had no problem hitting all the notes.

Kwanghee, however, had a slight problem, and Hyungsik immediately guided him along when he struggled through the chorus. Listen to the cover above!

Tip: sub