Complex sentence: He was also a songwriter, who wrote "Palisades Park" for Freddy Cannon and an autobiography titled "Confessions of a Dangerous Mind", which was made into the film of the same name directed by George Clooney.
Split into simpler sentences: He was also a songwriter, who wrote "Palisades Park" for Freddy Cannon. Barris wrote an autobiography titled "Confessions of a Dangerous Mind", which was made into the film of the same name directed by George Clooney.