'SM Station' has released the music video teaser for "Nightmare"! The new track features a number of artists including S.M.ROOKIE's Johnny and YB's Yoon Do Hyun as well as Reddy, G2, and INLAYER.

As the title suggests, the track is a bit more hardcore than what we're used to seeing from 'SM Station'. In the MV teaser, a woman dances on the floor as rock music plays loudly around her. "Nightmare" is due out on October 28.