Like many other inventions, the piano was founded on earlier technological Go innovations. The mechanisms of keyboard instruments such as the clavichord and the harpsichord were well known. In a clavichord the strings are struck by tangents, while in a harpsichord they are plucked by quills. Centuries of work on the mechanism of the harpsichord in particular had shown the most effective ways to construct the case, soundboard, bridge, and keyboard. Cristofori, himself an expert harpsichord maker, was well acquainted with this body of knowledge.

A relatively recent development is the prepared piano, which is used in contemporary art music. A prepared piano is a standard grand piano which has had objects placed inside it before a performance in order to alter its sound, or which has had its mechanism changed in some way. The scores for music for prepared piano often instruct the pianist to insert pieces of rubber or small pieces of metal (screws or washers) in between the strings. These added items either mute the strings or create unusual vibrating sounds.