The Woodstock music festival was both an ending and a beginning. For the Sixties counter-culture movement – that strange amalgam of protest, rebellion, self-indulgence, and idealism – Woodstock was the last gasp, the bow before the curtain rang down. But for tens of thousands of men and women, boys and girls, who attended the festival, it was a transformative experience, the start of a new way of thinking and being that for many would last a lifetime.