This Day In Rock History: August 21st
1971 Arthur Brown's Kingdom Come, Hawkwind, Duster Bennett, Brewers Droop, Indian Summer, Graphite, (and second from the bottom on the bill) Queen all appeared at the Tregye Festival Truro, Cornwall, England.
1976 The Rolling Stones, 10CC, Lynyrd Skynyrd, Todd Rundgren's Utopia and Hot Tuna all appeared at The Knebworth Festival, Hertfordshire, England, tickets £4.50.
1983 Ramones guitarist Johnny Ramone had a four-hour brain surgery operation, after being found unconscious in a New York Street where he had been involved in a fight.
2021 Don Everly, the surviving member of the rock 'n' roll duo The Everly Brothers, died at the age of 84. Everly and his brother, Phil, had worldwidehits in the late 1950s and early 1960s, including 'Bye Bye Love' and 'All I Have To Do Is Dream'. They were known for their close harmonies, and influenced groups like The Beatles and Simon and Garfunkel. The Beatles based the vocal arrangement of 'Please Please Me' on The Everly's - hit 'Cathy's Clown'.
source: thisdayinmusic