Na Yoon Kwon and Sunny Hill's Joobi sang "Love One" for Part 2 of the MBC Wed-Thurs drama�'Mister Baek' OST!

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The medium-tempo duet by�Deux�Lee Hyun Do's producing unit Team Document�showcases Na Yoon Kwon and Joobi's romantic harmony.�The lyrics talk about falling in love, saying, "I realized now what my heart has been saying all along. That the thrill and pit-a-pat of my heart is love. I think about you all day long. My shortened day and sleepless nights are all because of you."

Listen to the duet above!