Mary had a little lamb

I've just started to read Friedrich Kittler's Gramophone, Film, Typewriter. (...)"the mechanic Kruesi was given the assignment to build an apparatus that would etch acoustic vibrations onto a rotating cylinder covered with tinfoil. While he or Kruesi was turning the handle, Edison once again screamed into the mouthpiece [in his first experiment Edison had screamed 'Hullo'] - this time the nursery rhyme "Mary had a little lamb". Edison had to scream as the phonograph had no amplifier, but also because he was half-deaf.

I can quite vividly see and hear Thomas Alva Edison screams into the mouthpiece. My imaginary movie of this happening is rather amusing. About 20 years later, The Edison Standard was available for home entertainment use. Hear the Standard play "Mother, Dixie, and You"