LOS ANGELES - Superstars Kendrick Lamar, Bad Bunny and Lady Gaga are primed to make history on Sunday in Los Angeles at the 68th Grammy Awards, honouring the best in music. Pop chameleon Lady Gaga and Puerto Rico's Bad Bunny also are competing in all three categories. Lamar is nominated this year for his album "GNX," which includes the single "Luther" featuring R&B artist SZA. Lady Gaga, Bieber and Carpenter are set to perform, with more acts expected to be confirmed before Sunday. The Grammy Awards will once again be hosted by comedian Trevor Noah.