I have just returned from the Kunsthistorisches Museum, in Vienna (where I am living for all of 2011) - the one housed in the Nationalbibliotek. This was a revelation! It had an excellent array of keyboard instruments, and three separate rooms dedicated to Beethoven, Haydn and Mozart and the pianos each would have known and/or used. These included Conrad Graf, Stein, Anton Walter, Streicher family, Bosendorfer and a range of instruments from early Virginals and Spinets, to Clavichords, Cembalo (Dulcken, Antwerp) and another made in Venice in 1559, Hammerflugal (Kober), Harmonie Piano (with 5 manuals, which type Mozart would have known as a child - or even this one), Tangent Piano, Harpsichords, a Clavicitherium from Dusseldorf, and many Viennese instruments - both keyboard and stringed. There were 2 very old organs: one a Regal and another Positive organ. Leopold Mozart's violin was there. The very earliest stringed instrument I saw was made in Venice in 1511 and is in excellent condition - a Lira da Braccio. There was also a range of ancient cellos, viols and an assortment of other priceless stringed instruments. The Basset Horn of Mozart's time was there too. The coup d'grace was a playing/singing/drinking table embossed in ivory with all the words and notes for famous drinking songs, and all the parts - circa 1500. They say it is their most prized possession in the collection. Also, there were oil paintings of Beethoven (in his 50's and at 13), Schubert as a young man, a wax bust of Haydn made in 1800, and oil paintings of Luca Marenzio and Luzzarchi from the very early Florentine Camerata/Italian Intermedii period. This last was very moving. I thoroughly recommend this exhibition for anyone contemplating a visit to Vienna.
Topic: Square Broadwoo Piano - Circa 1815