Vol. 4

Vol. 4 has a diverse mix of heavy metal sounds, with Black Sabbath experimenting amidst the murky drug-induced atmosphere. Ozzy Osbourne's powerful vocals shine, while the band takes shots at accessibility but also undercuts their own intent. "Tomorrow's Dream" is a concise and almost radio-ready track, while "St. Vitus Dance" has a surprisingly upbeat vibe. The ballad "Changes" fails due to clichéd rhymes, and even the heavy "Supernaut" has a funky acoustic breakdown.