EXTEMPORISING MACHINE. An invention for printing the notes of an extemporaneous performance, by means of mechanism connected with the keyboard of a pianoforte or organ. The idea of being able to preserve the improvisations of great musicians is certainly an attractive one, and has often engaged the attention of mechanicians, but without any very practical result. The earliest endeavour in this direction appears to have been made by an English clergyman named Creed, who wrote a ‘Demonstration of the...
