This Icelandic producer caused a commotion in the classical world by taking an unusual approach to Chopin, using compromised keyboards and admitting ghostly murmurings into his artful mixdowns. The stylishly solemn result is similar to the sounds you'll hear in Arnalds' own compositions, like his minimalist score for the TV show "Broadchurch." Add a touch of digital percussion and you'll get Arnalds' gorgeous collaborations with electronic music stars Nils Frahm (on Stare) and Janus Rasmussen (in the duo Kiasmos). No matter which genre he touches, his gentle melodic gift leaves its imprint.