rock, progressive rock, 70s, heavy metal, metal, doom metal, hard rock, progressive, heavy, melodic, psychedelic, blues rock, classic rock, album rock, dark, spiritual, classic pop and rock, eclectic, british metal, philosophical, existential, 1973, traditional doom metal, energetic, classic pop and rock_1973_metal, classic pop and rock_1973_classic pop and rock_1973_metal, should be public domain, male vocalist, ominous, passionate, ozzy, introspective, occult rock, pop/rock, classic rock; heavy metal; hard rock; doom metal; stoner rock, sombre, proto doom, offizielle charts, pessimistic, 1–4 wochen