May will be a hot month for k-pop, with a slew of top artists and groups set for their highly-anticipated comebacks. Now, fans can add to the list IU and Nine Muses! According to a music industry insider, even with IU's current project, the KBS drama "You're The Best, Lee Soon-shin", the young singer is planning for a music comeback sometime in mid-May or at the latest June. In between filming for the drama, IU has been working hard to record her new songs and work on her upcoming album concept. LOEN Entertainment added though that nothing was confirmed for now. Also, Star Empire has announced that the girls of Nine Muses will be releasing a new mini album on May 8th. Their last release was four months ago, with the song "Dolls". Sweetune who worked with the group before on their title tracks, will be at the reins of this new album as well.