Édouard-Léon Scott de Martinville invented the Phonautograph which was a machine that recorded sound 20 years before anyone else invented a recording the machine, the problem was that it only recorded and did not play back sound.
Phonograph is invented
Thomas Edison perfects the design of the phonograph. This machine is capable of also reproducing sound.
First electrical recordings presented to the public
November 11, 1920
At the funeral services of the Unknown Soldier in Westminster Abbey, London was the first electrically recorded piece of audio that was publicly heard.
First stereo tape recordings
By Helmut Kruger at German Radio in Berlin.
Vinyl records are introduced
It would be roughly another 16 years until vinyl became the industry standard.
Ampex releases 8 track recorder
Ampex creates the first 8 track recording interface at the request of Les Paul.
cassete tapes are introduced
These would turn into the worlds most popular way to listen to music in about 10 years
CD's are invented
These wouldn't take over until the 1990's.
First MP3 player
The first MP3 player was released in 1997 which revolutionized the way people could listen to audio recordings.
The opening of the 1998 Winter Olympics was Beethoven's "Ode To Joy" performed by playing live audio feeds at the same time from 5 sperate continents.