BETHEL, N.Y. (AP) — Tie-dyed pilgrims and white-haired Woodstock festival veterans converged at the generation-defining site to celebrate its 50th anniversary, while Arlo Guthrie came back to sing — what else? — "The Times They Are a-Changin'."

Bethel Woods Center for the Arts is hosting a series of events Thursday through Sunday at the bucolic 1969 concert site, 80 miles (130 kilometers) northwest of New York City.