The members took fans behind the scenes of the "O Sole Mio" MV filming, which took place in the United States. In the video clip, the members goof around with each other off set but get into their professional side as soon as they start filming. The clip ends with the group asking for love and support for their new MV, as well as for their 3rd mini album 'Knights of the Sun'.

How did you like SF9's "O Sole Mio"?