Fortepiano produces sound by hammers striking the strings. Fortepiano's escapement action allows the hammers to fall back into their position after striking the strings. Modern piano was invented in Romantic period and in 1821, Erard Brothers from Paris invented the double escapement action.

The size of fortepiano increased from 5 to 5.5 to 6 to 6.5 octaves, while modern piano has the size of 7 octaves.

Also, sostenuto pedal was added by Claude Montal to the modern piano.

The "Fortepiano" and before that the "Harpsichord" also the cello and organ

An early type of piano is the Fortepiano (Sometimes called Pianoforte) Which appeared around 1750.

Fortepiano or pianoforte. Earlier keyboard instruments include the harpsichord, clavichord and virginal.

Nikolaus Schimmel has written:

'Nomenklatura fortepiano =' -- subject(s): Piano, Dictionaries, Polyglot