On this evening's Arts Show, Nicola Heywood Thomas interviews the Oscar-winning American director of the 1970 documentary Woodstock.

Michael Wadleigh now lives in west Wales and will talk about the extraordinary story of making the documentary that chronicled the Woodstock Festival.

His crew included an unknown Martin Scorsese and Thelma Schoonmaker, who went on to edit Scorsese's films. In many ways, Woodstock captured a moment in history and defined a generation.

After Woodstock Wadleigh wrote and directed films in Hollywood before leaving the film industry to work in the field of environmental sustainability.

Listen to the show this evening at 6.30pm on BBC Radio Wales, and for the subsequent seven days on BBC iPlayer.

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