The Universal Studios Amphitheatre is a 5317-seat open-air amphitheater located in the vicinity of several residential communities. When the Amphitheatre began its program of summer evening rock concerts, noise complaints were received from the neighbors. A shielding wall was built in an attempt to contain concert noise, but complaints continued. An evaluation of noise levels in areas from which complaints were received was begun in 1973. The program was extended in 1974 to an evaluation of various techniques to contain the noise. Loudspeaker panels and baffles for exit doors were designed and installed. In 1973, a program of noise data collection was begun. Procedures were developed for data collection and for providing information to establish interior sound level limits. This data collection and evaluation continued for eight summer concert seasons from 1973 through 1980. In 1981, work began to completely enclose the Amphitheatre so it could be used year-round. The development of the noise control program and the eight-year data collection program is reviewed and summarized.