Free Music Monday Unknown Mortal Orchestra Ill Come Back 4 U

The front cover of Unknown Mortal Orchestra's 2011 self-titled album bore a picture of a Spomenik, a futuristic monument of the former Yugoslavia abandoned and left to decades of decay. It was an image that worked well with the music: which sought to recreate the progressiveness of '60s psychedelic pop, then douse it in lo-fi recording effects to artificially age the jams.

That striking sound made UMO one of the best new bands of last year, and is found, once more, on their new single. "I'll Come Back 4 U" is the first new material from Ruban Nielson's project since last year, and is the first tune to come out in Adult Swim's annual program of free summer singles.

"I'll Come Back 4 U" has all the hallmarks of that UMO sound, and sounds brilliant the way it quietly arises out of the darkness, fading in with a rattling beat-loop and a groovy bassline, before a glassy guitar-line chimes in. Nielson's vocals are dowsed in enough effects as to turn his singing into something more tonal than textual; but it's hard to dodge the refrain, where the tune's title is sung with astonishing sweetness, over and over.

• Unknown Mortal Orchestra, "I'll Come Back 4 U"