I Am Woman (1972)

It would be difficult to overstate how important this song was when it came out in the spring of 1972. By Xmas of that year it had topped the Billboard charts, and could be heard blaring from every third house in my neighbourhood the night Billie Jean King defeated Bobby Riggs 6-4, 6-3, 6-3 in what was known as "The Battle of the Sexes".