4. Joe Cocker - 'With A Little Help From My Friends'
It's one of the most indelible images from Woodstock: Joe Cocker, looking so stoned he can barely stand upright, belting out The Beatles classic "With A Little Help From Friends" like it was an old soul standard. The performance became a key part of 1971's Woodstock documentary, instantly turning the radical re-imagining of the tune into Cocker's signature song. In the late Eighties, when the producers of The Wonder Years needed a single song to represent the Sixties, they went with this.