Ozzy Osbourne Covers John Lennon for 70th Milestone

NEW YORK (CBS/AP) Ozzy Osbourne, the self-proclaimed "Prince of Darkness," is showing off his melodic side while paying tribute to one of his main musical influences, John Lennon.

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The Black Sabbath frontman honored Lennon, who would have turned 70 Saturday, and his musical legacy by recording a cover version of his song, "How," a single from his 1971 "Imagine" album.

Osbourne told the Associated Press that Lennon was a "driving force for humanity." The heavy-metal singer has often expressed his admiration for Lennon and The Beatles, crediting them as the inspiration behind his musical career.

"When I heard The Beatles, I said, 'That's it. That's what I want to be. I want to be a Beatle,'" Osbourne told NPR earlier this year. "I bought the Beatle suit, the Beatle wig, the Beatle photographs -- anything with The Beatles."

Osbourne's version of "How" is available Tuesday on iTunes, with all proceeds going to Amnesty International.

See his video here: