Dan Auerbach of the Black Keys is clearly a man who likes to keep busy, handling plenty of production assignments and backing like-minded artists during his downtime from the band, and in 2015, after the Black Keys took some time off after drummer Patrick Carney suffered a shoulder injury, Auerbach decided to make productive use of the hiatus by launching a new side project. The Arcs were formed by Auerbach and Leon Michaels, a multi-instrumentalist who was part of the studio crew on Auerbach's production projects for Dr. Read more on Last.fm