Hip hop group M.I.B released their new song, "Worry About Yourself First" music video teaser online.

On November 25, M.I.B released a black and white teaser video online.

Model Lee Ho Jung made a surprise appearance in the teaser and gained much attention.

A female voice is also heard in the teaser, making fans curious to see who the surprise female artist is for the song.

This song was produced by leader 5Zic and is about the pain of a breakup.

They will release the song on November 27 and make their comeback performance on KBS "Music Bank" on December 29.