The other actors in the film were also largely nonprofessionals. Conversely, embroidery is also a folk art, using materials that were accessible to nonprofessionals. Consequently, nonprofessionals began to offer their services under the guise of psychologists. Of the 348 UK performances, the majority were by nonprofessionals. Andrusco never appeared in another film, and the other performers were mainly nonprofessionals. The song is notoriously difficult for nonprofessionals to sing because of its wide rangea 12th. In some cases, nonprofessionals sign on as paying passengers.