The 4,000 fans who attended J.Y. Park's 'Bad Jazz Bar' concert held at�Seoul Olympic Hall on the 28th were able to catch a sexy performance from�Brown Eyed Girls' Ga In and J.Y. Park.

Ga In entered the stage in a mini dress and performed alongside J.Y. Park for their duet, "Someone Else".

Following the performance, Ga�In had the audience chuckling as she showed her admiration for J.Y. Park by comparing her relationship with J.Y. Park with that of Han Ga In's and G-Dragon (Han Ga In is very well known to be a huge fan of G-Dragon), "A lot of people know that I am a fan of J.Y. Park sunbae. If G-Dragon has Han Ga In, then J.Y. Park has Ga In. He was my idol when I was a student and he is a sunbae that I respect. Before I went on stage, I secretly observed him from behind. Of course, he is charismatic and exciting."

J.Y. Park gazed at Ga In as if to thank her for her words, but Ga In remarked shyly, "Why do you keep staring at me like that? It's embarrassing..", as the audience broke out into laughs.

'Bad Jazz Bar' will continue with concerts at the SK Olympic�Handball Gymnasium in Seoul from the 29th-31st.

Source + image: Newsen via Nate