Ozzy Osbourne, the vocalist who became synonymous with heavy metal's development, died on July 22, 2025, at age 76 in Buckinghamshire, England, following a heart attack during a prolonged illness. His passing occurred only weeks after performing his final concert with the original Black Sabbath lineup in Birmingham, lending poignancy to an era-defining musical partnership.

Osbourne's early interest in music, sparked by hearing the Beatles at fourteen, led him through various occupations before he joined guitarist Tony Iommi, bassist Geezer Butler, and drummer Bill Ward to form Black Sabbath in 1969. The band's distinctive blend of blues-based rock with darker, heavier arrangements and occult-themed lyrics proved innovative for its time. During their most productive period between 1970 and 1976, they released eight studio albums with seven reaching the UK top ten. After his 1979 departure from the band, Osbourne built a solo career spanning thirteen studio albums, cementing his influence as a pivotal figure in establishing and evolving the heavy metal genre.