The archicembalo was a musical instrument described by Nicola Vicentino in 1555. This was a harpsichord built with many extra keys and strings, enabling experimentation in microtonality and just intonation.
Reproduction of the archicembalo
Diagram of the archicembalo's tuning in cents.
Clavemusicum omnitonum (Vito Trasuntino, Venice 1606) - Bologna, International museum and library of music
Nicola Vicentino was an Italian music theorist and composer of the Renaissance. He was one of the most progressive musicians of the age, inventing, among other things, a microtonal keyboard.
Frontispiece in the Vicentino's treatise on music. Inscriptions: 1 (outer circle) Incerta et occulta scientiae tuae manifestasti mihi; 2 (inner circle) Archicymbali divisionis chromaticique ac enarmonici generis praticae inventor; 3 (under the portrait) Nicolas Vicentinus anno aetatis suae XXXXIIII
Cathedral of Ferrara. Ferrara was the principal center of chromatic experimentation in the second half of the 16th century.
Keyboard of the archicembalo