Bincika Vol. 4 (2021 Remaster) na Black Sabbath, wanda aka saki a ranar 24/09/1972. Kundin waƙoƙi 10 wanda ya haɗa da 'Wheels of Confusion / The Straightener - 2021 Remaster', 'Under the Sun / Every Day Comes and Goes - 2021 Remaster', 'Tomorrow's Dream - 2021 Remaster'. Samu cikakken kididdigar yawo, nazarin kowace waƙa, da ma'aunin shiga na masu sauraro.
