5) Nachtmystium, “Seasick”
OK, this is really in on a technicality. Yakuza’s Bruce Lamont is the musician on here, and we’ll get to them in a minute. But for Chicago black metal band Nachtmystium’s fourth album, the spellbinding Assassins:Black Meddle Part 1, Lamont’s appearance just upped the mind-fuckiness of an album that “meddled” with what black metal is about. After the psychedelia, subtle electronics and genre-jumping of the rest of the album, Lamont’s appearance on the album-closing “Seasick” trilogy just felt like the right thing to do.