"I've opened the door, now my mind's been released!" Steve brings in one of his favorite albums from his favorite band, today we're looking at BLACK SABBATH VOL. 4 (1972)

Vol. 4 is the fourth studio album by English rock band Black Sabbath, released in 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.

Though the production of Vol. 4 is officially credited to Black Sabbath and Patrick Meehan, the bulk of the actual production was performed by guitarist Tony Iommi.[2] "It's the first album we've produced ourselves," said vocalist Ozzy Osbourne in 1972.  Meehan had little actual involvement in the album's production but nonetheless insisted he be listed as producer, according to Iommi.[2]

The recording was plagued with problems, many due to substance abuse. In the studio, the band regularly had speaker boxes full of cocaine delivered.

Vol. 4 (Black Sabbath album) - Wikipedia

This is the YouTube video from a channel called The Tapes Archive that had a ton of information about Patrick Meehan that I incorrectly attributed to Trash Theory (another good channel though!) Black Sabbath - Sabotage | The Documentary