 Bava's song and the films assistant director Lamberto Bava had also spoken that he only recalled his father being brought into do matte paintings on the film.Mario Bava's biographer Tim Lucas had debated this based on Rossini's presence on set and Lamberto Bava's other recollections.Following the financial success of "A Fistful of Dollars" in Italy, several scripts that had previously had not been put into production that were made due to the popularity of Westerns made by Karl May were put into production.