It should come as no surprise that adorable singer IU is being featured on the soundtrack for her new drama Producer. IU may play a cold ice queen in Producer, but her new self-composed song "Heart" is soft, featuring her lovely and delicate voice. Listen to it now! 

The song played at the end of the second episode over the weekend, and it immediately hit #1 on 8 real-time charts. IU stated that she released this song for all the fans who have been supporting her all this time.

Isn't she the sweetest? You can hear the song in episode 2 of Producer below: