BTS singer Suga's "probably busy on Monday". That would explain his absence from the Eight teaser video IU shared on May 4th. Fans of the K-pop singers were in for a surprise when IU dropped the teaser video of the duo's upcoming single. The song was announced a few days ago with the songstress confirming the music video will release on May 6. Ahead of the release, IU released a teaser video and it is unlike anything she's ever presented before.