Released today in 1971: Led Zeppelin’s untitled fourth album.
Led Zeppelin IV: The Monument That Redefined Rock Released on this day in 1971, Led Zeppelin’s untitled fourth album—universally known as Led Zeppelin IV—remains a cornerstone of modern music. It was the record that silenced critics, redefined genres, and elevated rock into myth. Conceived in secrecy and symbolized by four mysterious runes, it was