Glenn Hughes Opens Up on Ozzy Osbourne’s Passing, Says He Was ‘Genuinely a Really Kind, Good Man’  Ultimate GuitarJudas Priest’s Rob Halford on Ozzy Osbourne’s Death: ‘Curled Up In a Ball And Bawled’  The BragOzzy Osbourne died of cardiac arrest, death certificate says  The GuardianOzzy Osbourne Knew the End Was Near During Final Black Sabbath Gig  TMZJudas Priest’s Rob Halford Reveals Reaction to Ozzy Osbourne’s Death: ‘I Curled Up in a Ball and Bawled My Eyes Out’  People.com