The band's 1996 fifth album "Through Silver in Blood" was credited by "Terrorizer" with "effectively invent the post-metal genre" and named the best post-metal album of all time by "Fact". The fluctuating 12-minute song "Purify" has been described as the album's "signature track". Neurosis' work has also contributed the development of doom metal, sludge metal, and drone metal, and these genres have been associated with post-metal since. Similarly, drone metal pioneers Earth have been significant to post-metal ever since their 1991 debut release "Extra-Capsular Extraction".