 The prohibition of Pennebaker from filming on Saturday afternoon came from Big Brother's manager Julius Karpen.The band had a bitter argument with Karpen and overruled him as they prepared for their second set that the festival organizers had added on the spur of the moment.Backstage at the festival, the band became acquainted with New York-based talent manager Albert Grossman, but did not sign with him until several months later, firing Karpen at that time.