Locoberry played the violin while Lee Sung Kyung moved her finger swiftly over the keys of a electronic piano, creating a near perfect harmony. Yoo Jae Suk commented, "I feel like I should be eating a fancy steak right now."
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Locoberry explained that she had transformed Na Hyun Hee's song "I Won't Love" to fit Lee Sung Kyung's personality and preference. She explained, "Sung Kyung is particularly lively so I tried changing the song into a dance track."