The accordion has been written off repeatedly. It was pushed aside by the guitar in American popular music in the 1950s, mocked for decades after that, and declared finished more than once. It is still here, still being made, and still central to several living traditions. There are reasons for that.
The Mechanism Does Not Age
A free reed is a strip of metal that vibrates when air passes it. There is no string to stretch out of tune in an evening and no skin to go slack in humidity. A well made accordion from the 1950s with sound reeds and intact valves still plays, and that is not true of much else at the same price.
One Player Is Enough
Melody on the right, bass and chords on the left. The design has not changed because the problem it solves has not changed. A single musician can play a dance, a wedding or a street, which is the same reason it spread in the nineteenth century.
It Carries Without Help
An accordion is loud enough for a room full of people talking, and it needs no power. In a Louisiana dance hall, a Colombian plaza or a Dublin back bar, that is still the practical requirement.
It Belongs to Communities, Not to Fashion
This is the part that matters most. The accordion is not the sound of a genre that can go out of style, it is the sound of particular places. Vallenato in Colombia, conjunto on the border, zydeco in Louisiana, trad in Ireland. Those traditions are tied to language, dance and family, and they do not follow charts.
When popular taste moved away in the 1950s, none of them stopped. They simply stopped being visible to people outside them.
Its Voice Is Unusually Expressive
Because the bellows control the air, the player controls volume continuously, the way a singer does. You can swell a single note, cut it off, or push the attack. Few instruments that also play chords give you that, and it is why the accordion sounds like it is breathing.
And It Keeps Coming Back
Accordion and bandoneon have turned up steadily in film scores, folk revivals and indie records over the last thirty years, usually when a director or producer wants something that sounds rooted. The instrument is now shorthand for place and memory, which is a strange outcome for a Viennese patent, and a durable one.
What That Means If You Are Learning
You are not picking up a novelty. You are picking up an instrument with living teachers, a deep recorded history and an audience in a dozen countries. Choose the type that matches the music you want to play, learn the bellows properly, and work from recordings.
More on choosing an instrument and on the regional styles in the music writing here.
