Pedro Rivera (also known as Pedro Ángel Rivera Muñoz) collaborated with Susan Zeig on Plena is Work, Plena is Song (1989) in Puerto Rico and New York City. He is a renowned Puerto Rican documentarian. He graduated from SUNY Buffalo in 1969. Shortly after that, he started teaching super 8mm film with Jaime Barrios at Young Filmmaker's Foundation (YFF) workshops. He made Manas a La Obra: The Story of Operation Bootstrap (1983). He met Susan Zeig through the YFF. He is a currently a member of AdocPR, a nonprofit member organization dedicated to promoting and supporting non-fiction films in Puerto Rico. His most recent documentary Desalambrado analyzes the social struggles for fair and adequate housing in the Caribbean islands and premiered in 2019.