Heavy metal pioneers Black Sabbath have postponed two shows on what they say will be their final tour after frontman Ozzy Osbourne, 67, fell ill.<br />Black Sabbath scrapped plans to play Saturday in Edmonton, Alberta and announced that the band would also push back another Canadian show scheduled for Monday in Calgary.<br />The band said in a statement that it was postponing the shows as Osbourne suffers “extreme sinusitis” and that the concerts would be rescheduled, with dates to be announced later.<br />The British band, whose influential first album came out in 1970, has vowed that the concerts will be the last and called the tour “The End.”
