fortepiano

Fortepiano is the original Italian name for the instrument Bartolomeo Cristofori built around 1700 in Florence. He called it gravicembalo col piano e forte—'harpsichord with soft and loud'—because its revolutionary feature was dynamic range. Unlike the harpsichord, which plucked strings at a fixed volume, Cristofori's instrument used hammers that could strike softly or forcefully depending on the player's touch. The name was eventually shortened to pianoforte and then to piano. Fortepiano reverses the word order but names the same invention.

The early fortepiano had a lighter action, thinner strings, and smaller hammers than the modern piano. Its sound was brighter, more transparent, and decayed faster. Mozart, Haydn, and early Beethoven composed for this instrument—not the massive, iron-framed concert grand of the 19th century. When you hear Mozart on a modern Steinway, you are hearing his music through a translation. The original sound was smaller, quicker, more conversational.

The instrument evolved rapidly. Johann Andreas Stein in Augsburg built the fortepianos Mozart preferred. John Broadwood in London developed a heavier, louder English action. By Beethoven's later years, the fortepiano was already transforming into something closer to the modern piano. Beethoven broke instruments regularly—his playing demanded more power than the fortepiano of the 1790s could deliver.

The 20th-century historically informed performance movement revived the fortepiano. Malcolm Bilson, Robert Levin, and Kristian Bezuidenhout began performing Mozart and Haydn on period instruments, and audiences heard the difference. The fortepiano's lighter sound revealed details in the music that a modern piano obscures—fast passages were clearer, ornaments crisper, silences more sudden. The instrument Cristofori built was not a draft of the piano. It was a different instrument that happened to evolve into something else.