Singer Jung Joon Young performed a rock cover of old-school dance group Cool's "Differences between Men and Women" on the latest 'Immortal Song 2'.

His rendition was in the unique, rocker sound he's known for, and he even gave it a sweet twist in the middle. Cool's Yuri stated, "I never knew our song could be this cool," while Kim Sung Soo said, "Jung Joon Young, where's the rap part?"

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