Ozzy Osbourne, preeminent wizard of heavy metal, has taken his final bow. How did he get millions to bang their heads to pain, suffering, and misery?

Once you cross the event horizon, light can no longer escape, and the universe fades into darkness.What lies beyond? At the singularity, the very fabric of space and time breaks down.

Geezer Butler, bassist and primary lyricist for Black Sabbath, explains in his 2024 memoir, Into the Void, why the band took a deep dive into darkness as they came to prominence in the early 1970s.