リードオルガン

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Meanings

1

noun

reed organ

A keyboard instrument that produces sound by blowing air through free reeds; includes harmoniums and American-style reed organs.

リードオルガン

Variant with interpunct; less common in running text.

リード・オルガン

ハーモニウム
ハーモニウム is a specific type of reed organ where air is pushed through the reeds, while リードオルガン is the broader category.
パイプオルガン
パイプオルガン (pipe organ) uses pipes instead of reeds to produce sound and is typically much larger.

Borrowed from English 'reed organ'.