Sunye and 2AM's Jo Kwon showed off their two-decade-long friendship on 'Immortal Songs.'

On the February 4th episode of KBS 2TV's 'Immortal Songs,' Sunye and Jo Kwon showed off their longtime friendship by performing "Memory of the Wind" together. 

During the episode, Jo Kwon said they have been friends since 2001. He commented, "Sunye is like a stone to me. She debuted before I did and I was influenced by her a lot. She was my star, sister, mother, and role model. If you unpack her life, you'll see how she is like a stone that doesn't break down." 

Sunye commented, "Jo Kwon is like a tree. Whenever I meet him, he always gives me a rest, a laugh, and energy. He is comfortable like a tree." They then showed off their 22-years-long chemistry saying they even go to the same nail salon. 

Check out their performance of "Memory of the Wind" here.