So if you're looking to single out their fifty greatest songs, you have a lot to choose from. Most of the songs on this list come from the 1960s and '70s, but they recorded plenty of essential music ...

American Pop Flashback! Great Hits of the '60s & '70s is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV ...