[1] The song was released digitally as the lead single from the EP on October 5, 2012, by LOEN Entertainment.
A modern dance-pop song with funk influences, "Bloom" talks about the delightful and positive feelings of a girl while experiencing sex for the first time.
Upon its release, "Bloom" was met with positive reviews from music critics and has been included in several publications K-pop best-of lists.
The video teaser for "Bloom" was released on October 4, 2012, through LOEN Entertainment's official YouTube channel.
Due to its success on digital platforms, it won Song of the Year (October) at the 2nd Gaon Chart Music Awards.