I was just in Nice and enjoyed this exhibition. I thought that some info might be worth posting.
From 13 May 2011 to 17 October 2011: Exhibition dedicated to Sébastian
Erard’s invention of the double movement harp. It is the only event
announced for 2011 to commemorate this important technological invention
which influences harp production to this day.
Many prestigious pieces are presented in this exhibition such as Georges
Cousineau’s “14 pedal” harp (1782), Sébastien Erard’s first harp
(1786), harps on loan from the Muséo Salvi (Italy), the Institut de
France, various private collections and notably from the
Gaveau-Erard-Pleyal collection lent to the Palais Lascaris by the
company Axa in 2009.