Rock opera has more or less been around from the same time as rock itself, but pairing up opera with dark,
extreme metal
was the idea of
Christopher Johnsson
and his band,
Therion
. Their last album release that brought them great success in the metal world was "Theli" in 2012, but since then,
Christopher Johnsson
has created the
Luciferian Light Orchestra
project, which sounds like a 70’s version of
Therion
, mainly inspired by the 70’s occult vibes and themes."