Alvino Rey, one of the pioneers of electric guitar, shows off his “singing guitar effect” in this short film, circa 1944, featuring Stringy the talking guitar puppet. According to Wikipedia, “In 1939, Rey used a carbon throat microphone to modulate his electric guitar sound. The mike, developed for military pilots, was worn by Rey’s wife Luise, who stood behind a curtain and sang along with the guitar lines. The novel combination was called “Singing Guitar”, but was not developed further. The innovation was the first known talk box experiment.” Wow!