How did the electric guitar get loud enough to lead a band?
The first electric guitars were built because guitarists could not be heard over a big band, and a man who did not play guitar helped finish the job.
▶ Start the storyThe electric guitar got loud because guitarists in the era could not be heard. It was invented in 1932, and jazz guitarists adopted it because they wanted to play single-note solos in large bands. As orchestras grew, players realised they needed amplification. An electric guitar has that turn the vibration of its strings into an electrical signal, and that signal is turned into sound by a loudspeaker.
A pickup works with coils wrapped around a magnet. The strings' vibration disturbs the magnetic field, and that creates an electrical signal that can be amplified. The first electrically amplified stringed instrument sold commercially was a metal lap steel guitar nicknamed the "Frying Pan", designed in 1931. Early electric guitars were built on hollow acoustic bodies, which had a problem: the body also picked up the amplified sound and fed back with squeals.
Step 1: A steel string vibrates
Step 2: A magnet and a coil of wire feel it
The magnetic field changes
Step 3: A small electric signal flows out
Step 4: The amplifier and loudspeaker make it loud
Les Paul found a fix. After hours in a New York guitar factory he built a prototype nicknamed the Log, a solid piece of wood with a pickup and strings. With no hollow body to resonate, and lost were no longer a problem. Gibson, the big guitar maker, did not believe the solid-body style would catch on and kept its own Les Paul prototypes out of public view.
Hollow body
- The body resonates with amplified sound
- and wolf tones appear
Solid body
- Reproduces only the string vibration
- Less , more
Leo Fender did not wait. He was not a guitarist himself, but he saw that an electric guitar should be easy to hold, tune and play and should not feed back at dance hall volumes. His solid-body Esquire and Broadcaster, first made in 1950, became the first mass-produced solid-body guitar. Gibson's own Les Paul followed to compete. By the 1950s and 1960s the electric guitar had become the most important instrument in popular music.
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Recap
Pickups, a solid body and an amplifier let the guitar be loud without feeding back, and turned it into the lead instrument.
💡 A trick to remember it · Magnet listens, wood stays quiet, amp shouts: three jobs that gave the guitar a voice.
Surprising fact · Les Paul's solid-body prototype, the Log, was built after hours at a guitar factory, and Gibson did not think the idea would catch on.
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