What is a pianofone?

A pianofone is a musical instrument that combines features of both a piano and a phonograph. It typically consists of a keyboard that produces sound through mechanical means, often incorporating a rotating disc or cylinder that plays pre-recorded music. The instrument was designed to offer a unique and innovative way to experience music, blending the tactile experience of playing a piano with the playback capabilities of recorded music. However, it is not widely known or commonly used today.