A few days ago, the girls of f(x) released their MV teaser for their comeback title track NU ABO followed by the tracklist for their upcoming mini album. Today, the full audio of f(x)'s title track NU ABO has been revealed along with the album cover of their album! The song is quite unique and its different compared with their previous well known songs such as LA chA TA and Chu~?. Check out the song below! http://www.youtube.com/watch?v=ZWdgcx4MlO0 The album cover shows a girl, who looks like Sulli, covered in what looks like a blindfold. On the left shows a picture of the girls in a circle while their album tracklist is seen on the right. The rest of the tracks from f(x)'s mini album will be released on May 4th. Furthermore, the girls will be having their comeback performances starting from next week's Music Bank on the 7th, so stay tuned!