Chao-Wei Wu

Where it begins: The invention of phonograph

The record industry begins

The battle between cylinder record and disc record

Radio as a disruptor

Excessive competition between record businesses

The great depression Radio

Jukebox saves the day

Magnetic record VS. Disc record

CDs and Cassettes

MP3: the biggest disruptor

The MP3 accelerator

the broadband connection peer-to-peer services MP3 player

Possible future disruptors

Social media Online music Recording software