De quoi est fait player piano
A piano that plays from a perforated roll.
- Perforated piano roll — a pour partie. Perforated paper with the tune recorded on it.
- Tracker bar — a pour partie. Holes let air through to the valves.
- Soufflet — a pour partie. Pedal bellows create suction.
- Pneumatic pushers — a pour partie. They press the keys when signalled by holes.
- Program control of a machine — utilise. The tune is recorded on a perforated roll.
- Music notation — utilise. The rolls encode notes.
- Wood — est fait de. The case is wood.
- Paper — est fait de. The program is a perforated paper roll.