1970: Mungo Jerry, a British band with an unusual name and a unique sound, had the top tune in the UK with "In The Summertime". It went on to become the best selling UK single of the year, spending seven weeks at #1 and was a hit in 26 other countries including the US, where it would rise to #3 in mid-August.

Courtesy of classicbands.com, YouTube, and SoR Radio!