John Lennon would have been 70 this week, and honoring his legacy in song is one of his biggest, lifelong fans Ozzy Osbourne! Ozzy has made a cover of Lennon’s “How,” now available on iTunes to benefit Amnesty International.Osbourne says Lennon was a “driving force for humanity.”  He also credits the Beatles as the inspiration for his musical career.The former Beatle would have been 70 on Saturday. He was shot to death in December 1980.