No, not at all. this genre was formed (as named true Black Metal) in Norway, by three contemporary bands - Darkthrone, Burzum, Mayhem. Darkthrone was originally a death metal band but they didnt want to sound like mainstream death. read more
In short, black metal music is not satanic by definition. It’s not even antichrist, by definition but people who started this genre, they were antichrist and many of them pretended to be satanists for money and fame. A following video would help to understand the satanism in black metal music. read more
Initially a synonym for "satanic metal", black metal is intentionally separate from mainstream culture and this dissociation is often reciprocated, due to the actions and ideologies regularly associated with the genre. read more