The Four Horsemen @Master_Yoda77 8.1
Valhalla
@Vegard Pompey 7.8
Mirage
@CASSETTEISGOD 7
Inoculated Life
@Sirjack 6.8
Suite Sister Mary
@HamburgerBoy 6.7
Voyage to Hell
@no country for old wainds 6.5
Accuser/Opposer
@Mort Divine 6.3
Conqueror of Fear
@Slayed Necros 6.2
Штиль
@EspaDa 5.9
My Tortured Soul
@Carpe Mortem 5.7
Tales from the North
@Serjeant Grumbles 5.5
A Nest of Ravens in the Throat of Time
@dwellerINTHEdark 4.7
Inner Sanctum
@arg 4.5
Hit
@mutantllama 4.1
Comatose
@Baroque 3.9
Sorry, I did the math on paper so it took a little while.
Here are my ratings, which were not factored into the final scores:
Griftegård - The Four Horsemen (featuring guest vocals by Farida Lemouchi) 8/10
This is a cool interpretation of a classic song. The guest vocalist is a welcome addition. I'd recommend people to check out the original by Aphrodite's Child.
Obsidian Tongues - A Nest of Ravens in the Throat of Time (featuring guest vocals by John Haughm) 3/10
I don't really like Agalloch much anymore, but this is like an extra boring version of their worst music. It doesn't do much for me.
Behemoth - Inner Sanctum (featuring guest vocals by Warrel Dane) 2/10
Behemoth is so mediocre and Warrel Dane hasn't been good since the first Sanctuary album.
Aura Noir - Mirage (featuring guest vocals by Fenriz) 8/10
This song is awesome. No bullshit here.
Queensrÿche - Suite Sister Mary (featuring guest vocals by Pamela Moore) 6.5/10
A bit over-the-top but definitely solid and quite enjoyable. I think it works better on the album.
Marduk - Accuser/Opposer (featuring guest vocals by A.A. Nemtheanga) 4.5/10
This was better than I expected, but that's all that I can say. Nemtheanga made it more tolerable.
Ayreon - Comatose (featuring guest vocals by Anneke van Giersbergen and Jørn Lande) 1/10
I generally hate Ayreon, but they have much better songs than this one. This was a bad pick. I think several other songs by them would have done better.
Agatus - Conqueror of Fear (featuring guest vocals by Jimmy Petkoff) 9/10
This is the song that inspired me to choose this theme.
Probot - My Tortured Soul Live (featuring guest vocals by Eric Wagner and guest guitar by Wino) 4/10
Dave Grohl is a pretty amateurish metal songwriter, regardless of his star power and ability to get legendary musicians to appear with him in this band.
Paul Chain - Voyage to Hell (featuring guest vocals by Lee Dorrian) 7/10
Goofy and quite cool.
White Skull - Tales from the North(featuring guest vocals by Chris Boltendahl) 4/10
This was annoying.
Blind Guardian - Valhalla (featuring guest vocals by Kai Hansen) 9/10
The song that the previous song should have tried harder to be. This is excellent.
Gorguts - Inoculated Life (featuring guest guitar solo by James Murphy) 8/10
This is an awesome song from an awesome album, despite having the least impactful guest appearance on the list.
Scorn - Hit (featuring guest guitar by Justin Broadrick) 2/10
Boring.
Ария - Штиль (featuring guest vocals by Udo Dirkschneider) 5/10
This isn't really for me. They seemed pretty excited though.