1971: Sly And The Family Stone had the number one album on the Billboard chart with "There's A Riot Going On". The original title of the LP was "Africa Talks to You", but was renamed in response to Marvin Gaye's landmark album "What's Going On".
1986: The Doobie Brothers reunite for a benefit in Palo Alto, California. The performance inspires a reunion tour the next year and leads to one last Billboard Top Ten hit, 1989's "The Doctor".
1966: Jimi Hendrix released his first single, "Hey Joe". The record made it to number 6 in the UK, but failed to chart at all in America. He followed with "Purple Haze", "The Wind Cries Mary", "All Along the Watchtower" and "Voodoo Chile", all of which made the British Top 10, but in America, only "All Along the Watchtower" reached the Top 40, peaking at number 20.
1979: Pink Floyd started a five week run at the top of the UK singles chart with "Another Brick In The Wall, (part 2)".
1968: Just three weeks after being released, Marvin Gaye's "I Heard It Through The Grapevine" reached the top of the Billboard Hot 100, where it would stay for 7 weeks. It was Marvin's 30th US chart single, but his first number one.