Experimental noise rocker Lightning Bolt are the latest act to give up a track for Adult Swim's free Sumer Single series.

Their contribution, 'Barbarian Boy', delivers their most cohesive song yet, keeping their trademark blistering noise sound, but with a tighter arrangement. Listen to it below (via Stereogum) and be sure to return on Monday to grab the track for free!

Remember to head over to our 'New Music' section to listen to thousands of incredible songs. All for free!