Revolution is the second full-length album by KARA. It was released on online music sites on July 30, 2009, with a physical release on July 31. The album showed a more mature side from the group in contrast to their past releases, and incorporates elements of electronic and hip-hop genres previously seen on their debut album, The First Bloooooming. The album was also their first regular release to be recorded under the second line-up, featuring members Hara and Jiyoung, who replaced Sunghee after her withdrawal in 2008. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.