The First Sound Recording - we can hear it finally

[smoking-amp]

The 1st sound recording known, from 1860 , 17 years before Edison invented the phonograph, was recorded in smoke:

http://www.physorg.com/news126017185.html

to listen to it (mp3):
http://www.firstsounds.org/

Don

 

[Ty_Bower]

I think I hear voices speaking if I play it backwards... ;P

 

[smoking-amp]

"Number 9"?