Hammer action of the Cristofori piano from 1726 (copy 1997)
the Cristofori piano (copy 1997) in the Galleria dell'Accademia in Florence
the copy (2013) of the Gottfried Silberman piano from 1749
detail of the Cristofori spinet from 1690 (copy 2003)
detail of the ebony harpsichord copy (2009)
the oval spinet from 1690 after the restoration in 2012
the original bass key of the Cristofori piano of 1726 hidden in the Kraus action
The Silbermann piano during the rehearsal for the concert in the Abbey in Melck with Concentus Musicus from Vienna (2014)
Square piano by Johannes Zumpe & Gabriel Buntebart, London 1776, restored 2016 for the Museu de la Música in Barcelona

Bartolomeo Cristofori (1665 – 1732)

was one of the most innovative instrument builders of all time. At the end of the 17th century he invented the piano action with escapement. His new instrument was described for the first time in the year 1700 as „Arpicimbalo di Bartolomeo Cristofori, di nuova inventione, che fa il piano e il forte“. Over a period of 30 years he worked constantly to perfect his action. In the 1740s Gottfried Silbermann copied Cristofori's action down to the smallest detail for his Piano Fort.

Kerstin Schwarz

has worked for many years on Bartolomeo Cristofori and Gottfried Silbermann, the two most important figures of the early history of the piano. She studies their instruments and builds faithful copies of the original instruments (pianos, harpsichords, clavichords) which have survived in various museums. She also restores historic keyboard instruments, gives lectures, hires a Cristofori and a Silbermann piano and produces music CD's

20th Silbermann Festival 2013

Concert recording 14th Sep. 2013 Glashütte

D. Scarlatti, Sonata in f minor
Andreas Staier
Cristofori piano
J.S. Bach Prelude/ Fuge in g# minor
Andreas Staier
Silbermann piano

Instrument copies

A Clavecin Roïal, a Saxon square piano with a special Stoßmechanik and various stops will be finished soon.

Instrument copies

Two Silbermann piano and three Cristofori pianos are under construction.


Since October 2017 I am teaching the building of historical keyboard instruments at the Koninklijke Academie voor Schone Kunsten (KASK) in Ghent/ Belgium.

Instrument hire

For 2019, because of the many building projects, I accepted only a few concerts and recordings. At the beginning of August I will be at Royaumont (France) for concerts with the Silbermann piano (Jean-Luc Ho, Philippe Grisvard). At the end of August I will go with the Cristofori piano for a concert with Edoardo Torbianelli to Switzerland. In October he will do a recording using the Cristofori piano as basso continuo instrument. And for December 2019 a recording with Johannes Pramsohler and his ensemble (Philippe Grisvard will play the Silbermann piano) in the north of Italy is planned.