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Jang Jae In recently released "Button" on January 15 and received a chance to perform it live in front of an audience on 'Yoo Hee Yeol's Sketchbook'. She sang the beautiful song through an equally wonderful performance while strumming on her guitar. She received a loud applause towards the end as the show wrapped up for this week. Check out the clip below.

Is "Button" your favorite song by her so far?