BESTie's U.JI teamed up with rapper MC GREE on the January 21 installment of 'Immortal Song'.

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U.JI was asked about working with MC GREE, and she said, "When I was by myself, I was so nervous I couldn't sleep, and on filming days, I couldn't even eat. Today, I slept and ate well because I was with someone else. He was very dependable." She and the rapper were the sixth ones up on stage with a cover of Kim Myung Ae's "Road Boy", and their tango concept was perfect and powerful.

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However, it was Seo Ji Ahn�who took the final win.