Proving they can still rock, legends John Fogerty, Jerry Lee Lewis and Little Richard took the stage at the Grammy Awards for a medley of classic favorites. The 'Cornerstone of Rock' montage was opened by the 62-year-old Fogerty -- his first time ever to perform at the Grammys. The 72-year-old Lewis was next, tickling the ivories on his classic 'Great Balls of Fire.' Then the cameras panned to another piano, where the 75-year-old Little Richard electrified the crowd with 'Good Golly, Miss Molly.' Fogerty's band backed all three players.