Despised as an aberration when it appeared in the 1930s, the electric guitar won credibility by the 40s - and in the 50s it started to change the musical world. This is the story of how it was invented, how it developed and how it electrified popular music. Examples of the key models have been sourced, profiled and photographed to capture their design and character, and to explain how the way they were put together affects the way they play and sound...