Saxophone bell and boyle’s air pump: what they have in common

1. Step 1. Saxophone bell — is part of — Saxophone. It emits sound.
2. Step 2. Saxophone — evolved from — Clarinet. A clarinet reed on a metal body.
3. Step 3. Clarinet — uses — Resonance. Resonance.
4. Step 4. Resonance — is used in — Valve trumpet. Resonance of the tube.
5. Step 5. Valve trumpet — has part — Valve. Valves.
6. Step 6. Valve — is part of — Boyle’s air pump. Valves.

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