Las Vegas (AFP) – The music world’s A-listers will hit Las Vegas on Sunday for the Grammy Awards, where pop’s chart-toppers along with jazzman Jon Batiste will compete for the industry’s most coveted trophies. The US gambling capital is hosting the ceremony for the first time ever, after organizers postponed the original January 31 event over a surge in Covid-19 cases and then moved it out of Los Angeles. The timing of the Grammys just one week after Will Smith stunned the world by slapping Chris Rock on stage at the Oscars adds an extra layer of unpredictability to what is already usually one…