I'm a bit of a metal fan myself. Some of the artists I listen to are Dragonforce, Dragonland, Heavenly, Alestorm, Sonata arctica, dreamshade, Pellek, MGR OST, and amaranthe.
When I'm not in the mood for some metal I like to dabble into the OST for maplestory. Styles are all over the place with a few songs being meh but with a 400+ song soundtrack that's still getting more songs and 90% of them are nice is enough for me.
Few choice songs I always go to when I want to unwind, cygnus gardern, temple of time, and ellin forest.