Watch on Soap2day. Sathi Shakthi is a 1963 Indian Kannada-language film directed and produced by Kanagal Prabhakar Shastry. The film stars Rajkumar, Ramkumar, K. S. Ashwath and B. Raghavendra Rao. The film has musical score by T. G. Lingappa. Puttanna Kanagal assisted his brother during the shoot of this movie. This was the first movie in which Rajkumar played a dual role in full-fledged manner