This is a cool, refreshing concept…

Baltimore, Maryland’s King Los has earned a reputation for being one of the longest winded, most durable freestylers in the game today. His Backroom appearance, his Sway In The Morning spot, and his Toca Tuesday stop remained three of the most talked about, most impressive free’s heard in 2014.

After a quiet few months, the onetime Bad Boy sensation is back like he left somethin’. For nearly 15 minutes, with a crowded studio, King Los waxes words to a monster Alchemist beat, with Alan the Chemist in the lab watching the action. Oh yeah, and this linguistic marathon took place at 3 in the mornin’, presumably after a long night. As time goes on, Los’ bars get stronger and stronger and stronger.

Think these two ought to book a few weeks in the lab together?

Related: King Los Won’t Back Off The Mic On 106 & Park’s “The Backroom” (Video)