I worked at Svoboda's Nickelodeon in Chicago Heights in 1972-73 and supposedly my employer and a few of his other employees appeared in this film. Their part was in a dream sequence wherein they were playing their Zingabooms- a musical contraption comprised of a sort of pogo stick to which was attached a drum head, cowbell, percussion block and a vibra-slap, to the accompaniment of an accordian.
The place where I worked was in an old working class neighborhood and was a combination tavern, restaurant and antiques museum. Mr. Svoboda, his son Corky and one or two other persons provided the musical entertainment on Friday and Saturday nights.
The building had a large dining room off of which were adjoining rooms of priceless antiques, German mechanical music cabinets and various Nickelodeons and arcade games. The place was packed on the weekends.
I would love to be able to see this movie.