Les Paul, considered the inventor of the solid-body guitar, created an instrument that would sound loud and become a favorite among music artists. The legendary guitarist and innovator was led to construct these iconic guitars by a note that was handed to him one night by a fan after a live performance. It read, “I could hear your voice fine. I could hear your harmonica fine. … I couldn’t hear your guitar.” To Les Paul, this feedback meant that there had to be a way to amplify the sound and make the guitar sound loud while still retaining the sound quality at such volumes. He was right...