Heejun Han, who might be best known as the hilarious and talented singer from 'American Idol' and 'K-Pop Star', is releasing his first duet in Korea! Not only that, but the female artist he'll be singing a duet with happens to be a Girls' Generation member!

The track will be released on May 15, and hopefully he tells us which Girls' Generation member it is soon!

Heejun uploaded the video and announcement on his official Facebook page. He seems very excited about his upcoming duet with one of the Girls' Generation members. And who wouldn't be? He also flashes us his quirky and cute smiles at the end.

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Stay tuned for the duet release on May 15! Any guesses to which Girls' Generation member it is?