The third bridge guitar is just like a normal guitar, except it has three bridges instead of two. While some have been manufactured, the more common third bridge guitar is a regular electric or acoustic guitar with a screwdriver jammed underneath the strings on the fret board. The third bridge guitar is perhaps most well known as being used on multiple occasions by both guitarists, though this technique was also used in Nirvana’s “You Know You’re Right.” The third bridge creates a bell-like harmonic second tone in addition to the primary sound. I love that after all these years of using guitars, people are still inventing new ways to make music with them.
Third Bridge Guitar