2NE1 is the second eponymous extended play by South Korean girl group 2NE1. It was released in both physical and digital formats on July 28, 2011, through YG Entertainment. Like the group's previous material, 2NE1 2nd Mini Album was primarily written and produced by Teddy Park, with additional songwriting contributions from Kush and Lydia Paek. The EP was re-released as the group's debut Japanese record titled Nolza on September 21, 2011, under YGEX. 2NE1 was met with generally positive reviews from music critics, and was named amongst the best pop releases of the year by Spin. It was a commercial success upon release, where it reached number one on both the South Korean Gaon Album Chart and the Japanese Oricon Albums Chart. In Japan, 2NE1 became the first Korean group to reach number one with a debut record. It also appeared on the albums charts in Taiwan and peaked at number four on the US World Albums chart. The group embarked on their first concert tour in support of the release, titled the Nolza Tour, travelling throughout South Korea and Japan. A live DVD of the tour was released in November. From Wikipedia (https://en.wikipedia.org/wiki/2NE1_(2...) under Creative Commons Attribution CC-BY-SA 3.0 (https://creativecommons.org/licenses/...)