I've made a playlist of songs that make me think of the show, a particular character, hannigram, etc. Here's what I have so far. If you have some songs that remind you of any part of the show, please comment! I'm always looking for great songs :)
Songs for the show (in general): - Sweet Dreams por Marilyn Manson
Songs for Will Graham: - Monster por Imagine Dragons - The Bird and the Worm por The Used - Another amor por Tom Odell - People are Strange por the Doors - Leave Out All The Rest por Linkin Park - Unwell por Matchbox 20 - Dark In My Imagination por of Verona
Songs for Hannigram: - Firewall por Les Friction...