Korean girl group Apink resurrect a bright and positive time in K-pop when the wholesome Fin.K.L and S.E.S. ruled the charts. Formed by Plan A Entertainment in 2011, the group comprises Park Cho-rong, Yoon Bo-mi, Jeong Eun-ji, Son Na-eun, Kim Nam-joo, and Oh Ha-young (the seventh founding member, Hong Yoo-kyung, left Apink in April 2013 to pursue her studies). With throwback production and an innocent aesthetic, Apink made their debut with the Seven Springs of Apink in April 2011. The EP's first single was "Mollayo" ("I Don't Know"). Their sophomore EP, Snow Pink, arrived the same year. To celebrate their first anniversary, Apink issued the aptly titled "April 19," the first single off their debut LP, Une Année. A third EP, Secret Garden, was released in 2013. It featured their first major hit single, "NoNoNo," which peaked at number two on the Billboard K-Pop Hot 100. "Mr. Chu" -- off 2014's Pink Blossom EP -- scored the exact same chart position, setting them up for their first number one single and release, the Pink Luv EP.nn As their popularity expanded in Asia, they made their Japanese concert debut, which preceded a Japanese-language version of "NoNoNo" (it became a Top Five hit in Japan), and their first Japanese album, Pink Season. Their second LP, Pink Memory, and a coinciding tour capped off a busy 2015. As the Apink presence spread even further, the group made its way to Singapore, Vietnam, China, Thailand, Malaysia, and Taiwan. In 2016, Apink became the first K-pop girl group to tour North America since 2NE1 in 2012. They hit Los Angeles, San Francisco, Dallas, and Vancouver on their sold-out journey. By 2016, Apink began to evolve their sound, aiming for depth and maturity on their third album, Pink Revolution, which featured the Korean chart-topping "Only One." ~ Neil Z. Yeung