f(x)'s Amber breaks into solo territory with "Shake that Brass".

f(x)'s Amber drops her first official video for the single "Shake that Brass" and it's full of idols!  

Amber's 1st mini album 'Beautiful' is out today, February 13 (ahead of its physical release on February 16th). She has also already released a lyric video for the title track, check it out here