Keith Jarrett, Gary Burton: Royce Hall, UCLA, Los Angeles, California

ONE OF A series of recent jazz concerts at UCLA was to have featured Keith Jarrett on solo piano followed by the Gato Barbieri group. When Barbieri became ill, Gary Burton was invited at the last minute to perform on solo vibes and Jarrett was elevated to headliner. Though the concert originally planned would of course have been very different indeed, the concert that was held was an unqualified success.