Dionne Warwick, the Grateful Dead, Jefferson Airplane, Creedence Clearwater Revival, Steely Dan, John Davidson, Crystal Gayle, and many others. Sound mixer Mort Feld said in 1969 that if all the touring acts brought their McCune equipment back at the same time, there would not be room enough in the shop. One of the first times that a stage monitor was used for a live concert, the monitor was provided by McCune Sound. The concert was by Judy Garland, at the San Francisco Civic Auditorium. The concert rehearsal was not going well, and Harry McCune Jr. came up with the idea of pointing a stage speaker at Garland. McCune ran to his truck, and drove to the McCune office. McCune grabbed a loudspeaker, brought it back to the concert rehearsal, and then placed the speaker on the corner of the stage. He then took an audio feed off the main system, turned up the mixer, and Miss Garland was pleased with the added monitor sound. In the late 1960s the music scene was flourishing in San Francisco, and so was sound design itself. The Monterey Pop Festival and before that, the Beatles' last live concert performance, held at San Francisco's Candlestick Park, had sound systems provided by McCune Sound. During the Beatles' Candlestick concert the sound system could not be heard well over the screaming of the Beatles fans. Mort Feld of McCune Sound mixed the Candlestick Park house sound for the Beatles concert that day. In the late 1960s, engineer Dan Healy drew from McCune equipment to amplify the Grateful Dead; Healy said he sometimes blew up electrical circuits trying to get the audio louder. Starting in 1968, McCune Sound was included on band riders as one of the qualified sound companies for concerts. Other qualified sound companies included Swanson sound from Oakland, Clair Brothers from Lititz PA, Hanley sound from Boston and Kirnan sound from New York. McCune thrived in the concert market during the early 1970s and 1980s, and even branched out into stage theatre, supplying equipment for East Coast companies like ProMix and Masque Sound, at the same time creating the famed "wall of sound" for the Grateful Dead, and creating touring systems for Jefferson Airplane, CCR and others. Employees John Meyer and Bob Cavin created an active speaker system in 1971 known as the JM-3, named for John Meyer. This sound equipment was a three-way loudspeaker,