Complex sentence: The duo also fell in cross moves to marketing, including a spot on the bill in the first Polka Festival, held in Chicago in the mid- 60s, and an appearance in several films, in particular Pueblito 1961 melodrama directed by Emilio Fernandez.
Split into simpler sentences: The duo also fell in cross moves to marketing, including a spot on the bill in the first Polka Festival which was held in Chicago in the mid- 1960's. The group also had an appearance in several films, including "Pueblito", a 1961 melodrama directed by Emilio Fernandez.