B1A4 performed a passionate cover of the 2005 hit "Absolutely"�by Park Sang Chul on November 3rd's 'Immortal Song 2'.

Before the members got up on stage, Sandeul commented, "When I was in my third year of middle school, I went to an amateur singing contest to see Song Hae sunbae. I wasn't able to because I was knocked out in the preliminary round. Today, I will make up for that."

Baro started out with a freestyle rap, and the members sped up the tempo as the performance went on.

Check it out below.