Barns Courtney’s first album, “The Attractions of Youth” was blues-driven rock that carried the weight of the tumult he’d experienced over the previous years, and his newest album, “404,” while still exploring feelings of loss and bereftness, is one he said is happier. He’s opened for musicians such as Ed Sheeran, The Who and Blur, and according to his website, 2019 sees him with a “body of work that finds this reflexive, meticulous pop storyteller delivering a minutely crafted album with big tunes, flashes of humor and no shortage of ambition.”