Titles read: "The Sound Ribbon - Something new in sound records."
Location of events unknown.
Various shots show a new invention, the Sound Ribbon - forerunner of the modern audio tape - which is run through an early tape recorder. A thin, film-like ribbon is run through a machine where a diamond-studded cutter cuts minute indentations, picked up by a microphone. The recording can then be played back. A man works the machine from inside a van.
Nino Rossini and Tommy Fields (brother of Gracie) who are currently appearing in the Prince of Wales Revue run through a comic routine outside the van, speaking into a microphone. The beginning of the routine is then played back to them from a loudspeaker on the van. The comedians listen and laugh.