NU'EST, who had fans 'sleep talking' about the group's impending comeback with the release of teaser photos, is here to let you in on more details about their upcoming song!

As mentioned before, NU'EST has recruited Duble Sidekick for the new release and the title track will be called "Sleep Talking".

According to Pledis, the boys will be introducing you to a new genre of music called 'mystic fantasy' through this song. As for the song itself, the lyrics are said to express the feelings of a guy who falls for a girl, but is unable to express his feelings to her directly except for when he talks in his sleep.

They say this song will be one to trigger the imaginations of those who listen to it with its lyrics as well as its 'mystic fantasy' genre, so stay tuned for the 22nd to hear it for yourself!