The PH Grand Piano, designed in 1930 by Danish architect and writer Poul Henningsen, is a masterful fusion of musical instrument and modernist design object. Known primarily for his contributions to lighting design, Henningsen brought the same functionalist and progressive spirit to this piano, creating an instrument that is as visually striking as it is sonically refined.

The piano features a transparent Plexiglas lid and sides—a radical innovation at the time—which exposes the mechanical complexity and craftsmanship of the instrument. The frame is elegantly raised on three sculptural steel legs, reinforcing its lightness and futuristic aura. Its curved lid design and clear casing symbolize clarity and openness, aligning with Henningsen’s ideals of transparency in design and democratic accessibility in culture.

The design was the result of a commission from a Danish piano manufacturing company called Andreas Christensen that terminated piano production decades ago.

The PH Grand Piano is held in several museum collections, including the Metropolitan Museum of Art in New York and the Danish Design Museum in Copenhagen. It was also chosen by architect Alvar Aalto for the music room of his Villa Mairea.

This piano is a rare piece of Danish Design history, as well as a very fine musical instrument.