Antichrist Superstar by Marilyn Manson was written and recording over a several month period where all of the members were CONSTANTLY doing a buttload of cocaine, hydrocodone, drinking themselves stupid every night, self harm, and physically fighting eachother. The founding guitarist, Daisy Berkowitz, was fired from the band halfway through recording sessions.

Another good one is Iowa by Slipknot. Same shit as Antichrist Superstar, all of the members were sick of eachother, all were doing a shitload of drugs constantly, and Corey Taylor was in a deep spiraling alcoholic depression. Listen to the last song, the namesake “Iowa”. It’s 15 minutes long, but super dark and disturbing. When Corey went in to record vocals, he was black out drunk, puking on himself, and cutting himself in the booth - the result is that song. Shit is dark af