The 64th annual GRAMMY AWARDS got underway tonight in LAS VEGAS with SILK SONIC crossing up the skeptics, as they "Leave The Door Open" to yet another 70s funk-rocking, PRINCE homage, "777," with BRUNO MARS on guitar and ANDERSON .PAAK wailing away on drums.Those two turned out to be the big winners, earning both Record and Song Of The Year for "Leave The Door Open," which they pointedly did not play. The other big awards were won by JON BATISTE for Album Of .