Complex sentence: The new Burdon and band appeared at the famed 1967 Monterey Pop Festival at the Monterey County Fairgounds in Monterey, California at the peak of the Summer of Love; they followed Johnny Rivers onstage and were introduced by Chet Helms.
Split into simpler sentences: The new Burdon and band appeared at the famed 1967 Monterey Pop Festival at the Monterey County Fairgounds in Monterey, California at the peak of the Summer of Love. Burdon's band followed Johnny Rivers onstage and were introduced by Chet Helms.