Carillon and conveyor belt: what they have in common

1. Step 1. Carillon — has part — Pinned cylinder. Automatic carillons have a pinned drum.
2. Step 2. Pinned cylinder — is part of — Barrel organ. A pinned cylinder sets the tune.
3. Step 3. Barrel organ — has part — Bellows. Bellows feed air into the pipes.
4. Step 4. Bellows — is made of — Leather. Bellows are a leather bag.
5. Step 5. Leather — is material for — Conveyor belt. The first belts were leather.

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