In the Mozart Museum in Salzburg, there's a piano by Anton Walter of Vienna. It has two fewer octaves than a modern piano, a device operated by the player's knee to 'dampen' the sound, and a knob ...

“The portrait was sold at auction a few years ago for an incredible €4.6mil (RM21.56mil),” says Linus Klumpner, director of the Salzburg Mozart Museum in Salzburg, Austria. “The new owner ...