Olafur Arnold is an Icelandic music composer born November 3rd 1986 in Mosfellsbær Iceland his first musical appearance was as a drummer in a metal band.
One of Olafur Arnold’s most iconic score is Beth’s theme this score is meant to describe the feeling’s of the character Beth and it should sound and feel like how she felt throughout the series.
Olafur Arnold is also in the experimental techno scene this is a different step to what he is normally known for with his film and classical roots, he is in this group with his friend Janus Rasmussen both men use this band as a hobby as they both have other things they work on.
Other then Broadchurch Olafur has worked on the soundtrack for Hunger games and Taken 3.