As well as the Walter instrument, Mozart used a piano by Franz Jakob Späth, but we know from a well-known letter to his father Leopold, of 17 October 1777, that Mozart's favourite instrument at ...

This type of instrument was a favorite of Wolfgang Amadeus Mozart (1756-1791) and Johann Sebastian Bach (1685-1750). Another early type of piano on show is a clavichord, whose sounds are produced ...

So Mozart had to write a new aria — “Al desio ... a stately processional with a dark timbre that foregrounds low wind instruments — contrabassoon and a kind of low clarinet known as a ...