Claim: Clavilux refers to a mechanical invention that creates color art using keys, of which there are only seven known to exist.
Evidence: Clavilux is the term coined by the artist Thomas Wilfred to refer to his mechanical invention that allowed the creation and performance of lumia, which was Wilfred's term for light art. From Latin, Clavilux means "Light played by key." There are seven known to be extant, most of which are in private collections.