Present at the Creation - The Electric GuitarGuitars have existed for centuries, but the electric guitar is only about 70 years old. This musical instrument has become an icon of the rock and roll counterculture. It has changed popular music and popular culture. Before electric guitars, the guitar was a rhythm instrument in the background. With amplification, the electric guitar could take the lead. Using the simple physics of magnets and wire, the electric guitar was invented. By 1950, Fender was mass producing these new instruments.