Super Junior’s leader Leeteuk and F(x)’s member Krystal made a duet song called “Grumbling” and preformed it at Enjoy Today Korean show.
This ballad project is really successful. Everyone loved how Leeteuk showed his soft and warm side, and same goes to Krystal.
This ballad song is really cute. It has that relaxing tone to it that makes you smile.
Check out the song below: