Okay kiddo, a phonofiddle is a special kind of instrument that makes music using sound recorded on old-fashioned records. Remember how grandma used to play her music on those big, round things called vinyl records? Well, a phonofiddle uses those records to make music in a really cool way.
It works like this: the record spins around and a little arm with a needle on the end touches the grooves on the record. As the needle moves through the grooves, it creates vibrations that turn into sound. The phonofiddle has strings and other parts that make those vibrations turn into music.
The person playing the phonofiddle can control which parts of the record the needle touches, which changes the sound of the music. It's kind of like a mix between a musical instrument and a record player. And it makes really unique and fun music that you can dance to!