Princely Toys, from the collection of Jack Donovan. The film was shot in 1976.
"But icy fancy gave way to a cool reductionism. In the living room, instead of a curious mechanical orchestra we have a few plain boxes that can play any damned thing we please. The idiosyncracies of the musician's lips and limbs ... have been reduced to waveforms and numbers. Much the same happened in the visual realm, where 'mechanical pictures', gorgeous moving tableaux, were replaced by all-purpose 'moving picture'." The Recording Angel, page 187