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The actor remade veteran singer Shin Seung Hoon's original OST for 'My Sassy Girl' the movie, "I Believe". The remake song stays true to the original's soft and delicate features, while Joo Won's voice stands out due to his vibrant emotions. Meanwhile, 'My Sassy Girl' the drama will be coming to an end on July 18 at 10 PM KST.�

Listen to Joo Won's OST and catch highlights from the drama above!