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.

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