This Day in Rock n'Roll History 4/6

1979 – Rod Stewart marries Alana Hamilton.
1979 – Doobie Brothers: Minute by Minute US LP is no. 1 chart topper.
1977 – No. 1 Chart Toppers Pop Hit: “Dancing Queen,” Abba. This is the only No. 1 song by the international phenomenon.
1975 – No. 1 Chart Toppers Pop Hit: “Philadelphia Freedom,” Elton John.
1974 – California Jam music festival attracts 200,000.
1974 – Billy Joel cracks the top 40 for the first time with “Piano Man.”
1974 – Ladies and Gentlement, The Rolling Stones, the first film with quadrophonic sound, premiers at the Ziegfield Theatre, New York.
1973 – Queen sign their first recording contract.
1971 – Composer Igor Stravinsky, who shook the world with his compositions The Rite of Spring and The Firebird, dies at age 88.
1971 – Rolling Stone Records is formed.
1968 – Pink Floyd announce that founding member Syd Barrett has left the group.
1968 – Simon and Garfunkel: The Graduate US LP is no. 1 chart topper.
1965 – The Beach Boys record “California Girls.”
1963 – Beatles enter UK LP chart for first time with Please Please Me.
1960 – The Everly Brothers open their first British tour in London.