All about 4Minute's upcoming album

4Minute returns to K-pop with a new images, but also keeps the beats/style/music that makes 4minute... well 4minute.  Here's a timeline of 4minute's 2011 comeback:

March 21st: Released audio preview of their new album (has the words "Steal 20"; possible reference to their age)
March 22nd: Concept photos of 4minute's comeback are released.  Their comeback has something to do with getting ready for some kind of night out perhaps?
March 23rd: HyunA releases her concept MV:

March 24th: Jiyoon releases her concept MV:

March 25th: Jihyun releases her concept MV:

Gayoon and Sohyun are the last two members not to release their concept MVs yet.  They will probably upload these videos in the upcoming days.

WATCH THE AUDIO TEASER AND CONCEPT VIDEOS UNDER THE CUT

Source: allkpop