Black Sabbath Vol. 4 [2015 remaster]

Vol. 4 is the fourth studio album by the English heavy metal band Black Sabbath, released on 22 September 1972, by Vertigo Records. It was the first album by Black Sabbath not produced by Rodger Bain; guitarist Tony Iommi assumed production duties. Patrick Meehan, the band’s then-manager, was listed as co-producer, though his actual involvement in the album’s production was minimal.

The album continues the extremely heavy direction taken on the band’s previous album, Master of Reality, while also featuring more experimental elements, such as on “Changes” and “FX”.