Jisook's first solo music release since Rainbow's disbandment, a collaboration single, has finally been released!

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"Baesisi" is a sweet duet between Jisook and BTOB's Ilhoon, with Jisook's high tone and Ilhoon's low rap balancing each other out. "Baesisi" in Korean is an expressive word for when one laughs while blushing. 

Listen to the song and check out the duo's recording process above!