1968: The Rascals switched from light Rock to making a political statement when they released "People Got To Be Free". The song entered the Hot 100 six weeks after Bobby Kennedy was shot and would go on to number one for five weeks, ending up the fifth most popular song of the year.
1975: Van McCoy had the number one tune on the Billboard Hot 100 with "The Hustle", a song that he claimed to have written in less than an hour. The Disco hit would reach #3 in the UK.
1960: The Ventures "Walk Don't Run" enters the US Pop chart and introduces the instrumental Surf sound to Rock 'n' Roll. The song will peak at #2 a month later.
1965: The Beach Boys' "California Girls" is released in the US, where it will reach #3 in September. The song was the first Beach Boys recording to include vocals from Bruce Johnston who had joined the group to substitute for Brian Wilson on concert tours.