Norwegian
symphonic black metal band. While middle-aged people generalize their lyrics as dark and angsty, unlike The Beatles, they have the ability to cover more than one topic in a single album, including poetically challenging extremist
conservative religious fanatics,
the definition of morality, telling a narrative of Satan's assistant, and several more if you understand Norwegian.
Occasionally their music videos or lyrics contain unjustifiably objectionable material, but I interpret that this is their message to their fans not to become mindless followers of their band.