I know of the albums:
katatonia - brave murder day,
bloodbath - resurrection through carnage
ayreon - the human equation
and songs:
roadrunner united - roads,
sörskogen - mordet i grottan.
is there any other stuff I don't know about?
does opeth bring their own sound system to their live shows in foreign countries ? I am asking this because they are coming to the city I live in and the place they will perform in has a lousy sound system and always has technical problems during shows.