The story of a TV producer’s efforts to track down the surviving members of Sweetwater, a rock group that played at Woodstock but disappeared soon after. Amy Jo Johnson stars., A music reporter (Kelli Williams) tracks down the members of the band that opened the 1969 Woodstock festival and tries to uncover the mystery behind the disappearance of the group’s lead singer. Based on a true story. Amy Jo Johnson, Michelle Phillips. Present Day Alex: Frederic Forrest. Young Alex: Kurt Max Runte. Chris Caldwell: Adam Ant., A True Rock Story The story of a TV producer’s efforts to track down the surviving members of Sweetwater, a rock group that played at Woodstock but disappeared soon after.