Darkside

Jaar and Harrington first met while they were both students at Brown University. Harrington was recommended to Jaar by frequent collaborator Will Epstein when he was looking for a third musician for his live band, with the three subsequently touring together to support Jaar's 2011 album Space Is Only Noise. Darkside first formed during a Berlin stop on this tour. Jaar and Harrington were writing in their hotel room together when their converter plug popped, filling their room with smoke and forcing them to finish the song in the hallway on a laptop. Upon returning to New York, they continued to write together, developing their sound in their Brooklyn studio.

Their first release as Darkside, the three song Darkside EP, was released on November 17, 2011 via Clown & Sunset. It was well received critically, receiving positive reviews from several publications including The Fader and Resident Advisor, as well as an an 8.0 from Pitchfork. Jaar has described the project as blues-oriented and more guitar influenced than his previous work, stating in an interview with i-D that Darkside is "the closest thing to rock & roll I’ve ever done." Stereogum has described the duo's sound as "dubbed-out jazzbo junkyard fuzz."

The act debuted their live show in December 2011 to a sold out crowd at Music Hall of Williamsburg, stretching their three song EP out to an hour long set. They also played at the 2012 SXSW festival. Pitchfork has credited the project with allowing Jaar to transition forward into a "proggier and more narcotic-sounding" space while still maintaining his unique aesthetic, in part due to Harrington's influence. The Fader also noted Harrington's contributions, stating that he "adds weight" to Jaar's signature "airy" sound.[4] Darkside released their first music video in May of 2012 for "A1," which was directed by Ryan Staake of Pomp&Clout and Clown & Sunset Aesthetics.

The duo released their second collaboration Random Access Memories Memories on June 21, 2013.] The project, which was uploaded to a Soundcloud account under the pseudonym DaftSide, is a remix of Daft Punk's 2013 album Random Access Memories in its entirety. The remix album received positive reviews from critics and was described as "a dark, nearly industrial romp through a disjointed abandoned disco" by Death and Taxes.[16] Pitchfork stated that the release was "a far greater work than standard remix albums" and praised the duo for their ability to balance originality and playfulness: "At times they're looking for nuances in the original, small threads they can pick up and take somewhere else. Elsewhere they're just having fun, acting on instincts, never over-awed by the material."