Former model and transgender Choi Han Bit has debuted in a girl group!  She had undergone the surgery back in 2006.

Gaon Entertainment revealed recently, "Choi Han Bit, with classmates Hyena and Sehee who majored in dance with her at the Korea National University of Arts, will form a girl group named Mercury," and dropped their debut track "Don't Stop" for the official debut!

The track has an electronic sound to it that is subtle and laid back, just enough to get your heart pumping and your feet dancing.  Check it out above!

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