Why do accordions make sound?

Answer: Bellows push air through reeds

Bellows push air through reeds ✓ — Correct! Accordions use bellows (the expandable middle section) to push and pull air across metal reeds inside the instrument. When air flows over the reeds, they vibrate at specific frequencies, producing musical notes. Different keys and buttons direct air to different reed sets, creating different pitches.

Buttons compress gas cylinders — Wrong. Accordions use simple air pressure from bellows, not gas cylinders. The bellows push air across vibrating reeds.

Folding creates friction noise — Wrong. The folding motion isn't what makes sound. Bellows create air pressure that flows over reeds, causing them to vibrate and produce musical notes.