Singer John Park confirmed the date of his comeback.

John Park will release his new single, U, on September 12.

John Park's new song "U" was produced by the same producer of Justin Bieber's "One Less Lonely Girl."

A related staff said, "John Park recently concluded his new single in the United States. He worked well with the producer and chose 'U' of the four songs they worked on together."

"U" is a soul bass UK pop style song that reveals John Park's low mid-tone voice and soulful emotions.

John Park said through his agency, "I'm happy to be showing a new side of my music."