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▶ The Band - "Holy Cow" Watkins Glen Festival 1973 26 out of 55 - The Summer Jam at Watkins Glen was a 1973 rock festival which once received the Guinness Book of World Records entry for "Largest audience at a pop festival." An estimated 600,000 rock fans came to the Watkins Glen Grand Prix Raceway outside of Watkins Glen, New York on July 28, 1973, to see the Allman Brothers Band, The Band, and the Grateful Dead perform.

Heart is an American rock band which first found success in Canada and later in the United States and worldwide. Over the group's four-decade history, the band has had three primary lineups, with the constant members being sisters lead singer Ann Wilson and guitarist Nancy Wilson. Heart rose to fame in the mid-1970s with music influenced by hard rock and folk music.