Lee Jung-hyun (born February 7, 1980), also known by her stage name Ava, is a South Korean pop singer and actress. She was first recognized for her acting abilities with award-winning role in her first film and has been solidified as one of the top international acts from South Korea with her illustrious singing career. She is widely known as "The Techno Queen" as she introduced the techno music genre to Korea and throughout Asia. Lee is also known as "The Queen of Transformation" due to her unique new look for each and every song. In South Korea, she was voted "The Best Performer" with her colorful and charismatic stage presence. Lee is one of the most prominent acts from South Korea who is widely popular in China.

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