Hacker News Reader

I'm of a similar opinion. My 'work' playlist is almost exclusively trance music and black metal. Both are repetitive and don't demand your attention, great for concentration.

I've started listening to Black Metal while I'm working. I don't know why but it works for me.

Depending on your taste, a fair amount of black metal is relatively featureless, somewhat ambient.

Mostly Bathory and Gorgoroth. Can you recommend some others?

Xasthur, Nortt, maybe Blut Aus Nord, and a bit further out in various directions I'll say Portal, Aluk Todolo, Jesu, Vuyvr. Should be something in there for you, and there should be plenty of samples of stuff you haven't already heard of on the youtubes.

Blut Aus Nord, Deathspell Omega, Funeral Mist, Mayhem, Ondskapt, Watain, Darkthrone, Burzum, Altar Of Plagues, Leviathan

Might not be in the exact genre, but Opeth is nice

same with working out

Also instrumental bluegrass.