Heo Ga Yoon is a South Korean singer and dancer. She was born on May 18, 1990 in Seoul, South Korea and is the main vocalist of the popular girl group
4minute, formed by Cube Entertainment in 2009. She graduated at Dong Duke Girl's High School and is currently attending Dongguk University, Theater Major. She got 2nd place at SM 9th Best Singer Contest. Gayoon appeared in Mario's music video for "I'm Yours" on November 4, 2008 with Seulong from
2AM. In February 11, 2010 she featured on the "The Woman Who Still Wants To Marry" soundtrack, singing a d…
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