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- Frank Zappa vydal u Capitol Records své debutové sólové studiové album „Lumpy Gravy“. Na albu dirigoval skupinu studiových hudebníků, ale sám na žádný nástroj nehrál. Album bylo krátce nato staženo kvůli žalobě MGM Records a výrazně upravená verze byla znovu vydána v roce 1968; album se v americkém Billboard 200 dostalo na 159. místo.
- Frank Zappa temporarily disbanded The Mothers of Invention shortly after an eight-day tour of Canada. He said he was tired of playing for people who applauded for all the wrong reasons, as he felt audiences often overlooked the compositional complexity of the music and responded instead to the band's image and superficial eccentricities. He re-formed the group several months later.
- Frank Zappa released the album Hot Rats. Following this project, he moved away from the approach associated with his previous work with The Mothers of Invention.
- Frank Zappa released the album Bongo Fury, recorded with Captain Beefheart and his Magic Band.
- Frank Zappa performed at Memorial Auditorium in Buffalo, New York.
- Frank Zappa, Scorpions, Brand X, John McLaughlin, Ten Years After, Joan Baez and Genesis appeared at Ludwigsparkstadion in Saarbrücken, Germany.
- Frank Zappa performed at the Celebrity Theatre in Phoenix, Arizona.
- Frank Zappa's single “Valley Girl” reached number 32 on the US Billboard Hot 100. It was the only time Zappa placed a song in the US Top 40.
- Baltimore Mayor Sheila Dixon proclaimed August 9 as the official Frank Zappa Day in the city, recognizing his musical achievements and his advocacy of the First Amendment to the United States Constitution.