2AM's Jo Kwon brought out his bad boy side to 'Immortal Song'.

On the February 6th special of 'Immortal Song' dedicated to Rain, Jo Kwon was the second performer up with his rendition of Rain's 2002 popular track "Bad Man". Before his performance, he expressed, "It feels like a monthly examination. That's how nervous I am."

The 2AM member transformed Rain's "Bad Man" into a more upbeat song with a tango influence. Though Jo Kwon won the round, it was ATEEZ who took the final win.

Watch Jo Kwon's "Bad Man" above and the original by Rain below!