Don't call it soft-rock: These are 20 pop gems from the 1970s So today ... of bar rats who come to listen to the title character play and sing in "Piano Man" has a cinematic breadth that bewitches.

Part Two of Six. Huw Stephens and Sian Eleri tell the story of Welsh language pop in the 1970s. A decade of rock, revolution and a once-in-generation referendum. Of protest, prison and punk rock.