[upbeat polka music] - Angela Fitzgerald: Accordion music has danced across our state for nearly 200 years.

Brought from the Old World by European immigrants, that polka sound is synonymous with Wisconsin.

[bright accordion music] - Helmi Strahl Harrington: It's unique and beautiful.

Everybody loves it.

- Angela: That's especially true for Helmi Strahl Harrington.

- I've never known another Helmi.

It means "pearl" in Finnish.

- Angela: Helmi is a pearl like none other.

And she founded the world's largest accordion museum.

- Helmi: It's nice that it happens to be Wisconsin.

And I say with absolutely no modesty that we are the best because we have the most, but we also have the most unusual.

And some of these are really quite remarkable.

For example, this is a table organ that is like an accordion.

This is for right hand, this is for left hand.

[playing scale on table organ] - Angela: A World of Accordions Museum in Superior is home to instruments that play a unique role in its evolution and history.

- Helmi: It's a very complex instrument that has developed over 200 years and now has 2,500 examples downstairs.

Look at how big these guys are.

This one has 220 buttons in the left hand, and this one has seven octaves in the right hand.

We started a collection of unusual accordions not to be sold, but to be cherished.

- Angela: The oldest instrument on display sits here.

- Helmi: Well, the patent is 1829 in Vienna, Austria, but it was already in progress in Germany, in Berlin and elsewhere.

- Angela: The accordion could also be described as an instrument of war.

It helped Helmi's family rise from the ashes of World War II.

- Helmi: If it weren't for accordions, my mother wouldn't have survived the war, and that included me.

My mother and grandmother had been evacuated from Cologne to south Germany, and that's where I was born.

We survived because my mother could entertain the troops at the Red Cross station.

My grandmother, my mother, and me.

And that's how it was.

I never took my eyes off what she was doing.

- Angela: The gift of accordion music would be her mother's gateway to America.

- She saved three accordions, and she took them on board ship when she came across the sea with me, and an American soldier decided nobody needs three.

So, he threw one over.

- Angela: The two accordions that still exist are here in the museum.

- This was the one that she taught thousands of people on.

I was eight and began to study how to play and then how to repair.

I stuck my nose in her business right away and loved every moment of it.

It was something that she loved, and therefore I loved it.

- Anglea: Passed from mother to daughter, the love of music survived war and endures on stage in a former church that houses the museum.

- We have about a million pieces of music in the music library.

We have a thousand books and several thousand recordings of the infamous and the famous.

We have repair shops.

- Well, it's not in great shape.

- Helmi: It doesn't matter how wonderful the musical sound is and how much enthusiasm it gives your soul.

It still is a piece of machinery that needs repair.

- Angela: Preserving accordions would prove to be a life's work for Helmi.

Now, in her golden years, she sees change on the horizon.

- I'm 78 years old now.

I have stage five cancer, and I've been on the fifth year of a two-year life expectancy for a long time now, and so I'm hoping it'll continue a little longer, but I make no illusions.

- Angela: Like her mother, the accordion has helped Helmi through her darkest hours.

And her passion has never wavered.

- Helmi: I started off playing just because I loved it, and I still do.

The music is what they say.

It keeps you happy, keeps your inside humming and strumming as it should.

- Angela: The accordion reflects Helmi's childhood in Germany, her history, and a museum celebrated around the world.

- Helmi: So much has happened in the last 200 years.

Things have been lost, have been burned, have been killed by bombs.

The history of the accordion, its construction and its music, falls into that risk category.

That's part of the passion because in the end, I'm proud not just of the result, but of what it took to get there.

The goal is to keep that going beyond me.

[gentle accordion music]