OnlyOneOf's Mill is the latest member to release his own single!

On November 28 KST, the idol unveiled his song "beat," the title track of 'undergrOund idOl #5,' which also includes "blOOm (art pOp remix)." Through the song, Mill's intense rapping style is augmented with a strong synthesizer sound to create a glitching mood that mimics a frantically beating heart. The song was written and composed by members Nine and KB, with Nine appearing in the music video in the role of a tough student with a softness for school outcast Mill who goes out of his way to protect him.

Check out the full music video above!