Thanks, Q

Since I didn't say that the revolution took place immediately, just that the invention happened between 1800-1900, I think we're OK. My notes:

1800-1900 - TRUE - Thomas Edison invented sound recording in 1877 and patented the phonograph in 1878. Later developments made for a less breakable format and meant that further developments were possible. The height of the technology came in 1948 when Columbia Records introduced the 33rpm LP. 45rpm records were sold from 1949.

Any tap dancers out there? Punk rockers? ... even bagpipers ... it's getting lonely around here ...

;-)