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The singer and rapper are returning to 'Immortal Song' after collaborating a year ago, and they met expectations with their cover of�Lee Soo Man's "Waves". Kisum revealed that Yoo Sung Eun had advised, "I asked her about 'Immortal Song', and she said I should just perform as usual. She advised that it's okay as long as I don't get nervous."

Spoilers Below:

Though they had great chemistry as the last ones to perform, it was KCM�who took the final win.