Recently, it was announced that P.O. is making his solo debut with self-composed music. 

On September 19, the teasers for his 1st single has started with a photo. In the black and white cut, P.O. is captured reading a newspaper with the headline 'Men'z Night'. Since the headline stands out so much that is probably the title of his 1st single.

The full release of the 1st single is set for September 27 at 6 p.m KST.