Following the success of "You're a Big Boy Now", Coppola was offered the reins of the movie version of the Broadway musical "Finian's Rainbow", starring Petula Clark in her first American film and veteran Fred Astaire. Producer Jack L. Warner was nonplussed by Coppola's shaggy-haired, bearded, "hippie" appearance and generally left him to his own devices. He took his cast to the Napa Valley for much of the outdoor shooting, but these scenes were in sharp contrast to those obviously filmed on a Hollywood soundstage, resulting in a disjointed look to the film. Dealing with outdated material at a time when the popularity of film musicals was already waning, Coppola's result was only semi-successful, although Clark received a Golden Globe Best Actress nomination. The film introduced to him George Lucas, who became his lifelong friend as well as production assistant in his next film "The Rain People" in 1969. It was written, directed, and initially produced by Coppola himself, though as the movie advanced, he exceeded his budget and the studio had to underwrite the remainder of the movie. The film won the Golden Shell at the 1969 San Sebastian Film Festival.