The story
- Proto-Indo-European*h₂er-
- Proto-Indo-European*h₂r̥-mo-n
- Ancient Greek*ἁρμων (*harmōn)
- Ancient Greekᾰ̔ρμονῐ́ᾱ (hărmonĭ́ā)
- Latinharmonia
- Italianarmonia
- Englisharmonica
- Englishharmonica
- English todayharmonicist
Etymology from Wiktionary, CC BY-SA 4.0.