#1
some Black Metal artists use "natural recordings" instead of the single tracks in order to keep the raw feeling in the music... what do you guys think of this?

personnally i think its a great and artistic notion.
#2
keep of kalessin's new album was done like that but it does still sound quite produced

however into the nightside eclipse by emperor is a class album with a very raw sound, not sure if they did it as one sample tho

raw unproduced sound is best
#3
it's their music, they should record it how they think it best suits the sound they want to make
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#5
It really depends on the sub-genre of Black Metal, and their style. Gorgoroth and Immortal are perfect for raw and distorted, while Emperor and Naglfar would be a bit more produced, even though they still retain Black Metal values of distortion and that "rawness". I think if bands like Dimmu used more of that, like they used to with Stormblast and For All Tid, they might get back their reputation.