… Musical instruments, the sound of which is produced, or must be amplified, electrically (for example, organs, guitars, accordions). …
Explanatory notes
… speed. Different sized gear wheels are placed in pairs along the shaft, each wheel driving toothed wheels known as … pianos, organs, accordions, carillons, etc., but are nearly always known by their registered trade names. They enable … classified here, whether or not presented with the piano. Although they may generally be essential for the normal …