LOS ANGELES, CMC - The 55th Grammy Awards here Sunday night paid tribute to legendary Jamaican reggae superstar Robert Nesta Marley, renowned worldwide as Bob Marley. But, for a moment, it appeared as though there would hardly be any tribute to the late great reggae artist when about two-thirds of a set that was supposed to honour him was used by other performers. Bruno Mars and sting kicked off the tribute by singing not anything from Marley's massive repertoire but their own songs. Mars did reggae-influenced “Locked Out of Heaven,” and Sting sang The Police's “Walking on the Moon”.