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About 20 years ago, Daniel Hoffman, a classically trained violinist met a young musician playing in the town square in Marrakech, an ancient city in Morocco. They communicated in the little French they both knew, but their main common language was music. On the back of a motorbike of the fellow violinist, Hoffman weaved through the back streets of the city and then learned his first lessons in Andalusian music, the classical music of North Africa.

That experience gave birth to an idea: What would it be like to try to learn how to play different violin styles around the world in just one week? Oh. yes, and at the end of that week, play a concert. He even got a name for the concept "musical extreme sports".

It took him almost two decades to launch that dream with a friend, who introduced him to the wonders of Kickstarter, a funding platform for creative projects. Up to now, the dream has taken the form of a new documentary currently airing on American public television stations called "Otherwise, It's Just Firewood."

In the documentary, Hoffman travels to County Clare, Ireland, where he takes lessons with James Kelly, a master Irish violin player, for less than a week and then performs together with him in front of an audience, many of whom are star Irish musicians.

The film is what Hoffman hopes will be the first of an eventual series of short documentaries, showing him learning to play the violin in a variety of styles, includingthe folk music of south India, Sweden, Greece, Romania, and West Virginia.

That would add to his extensive repertoire(全部曲目), which already includes Balkan, Middle Eastern, and Turkish styles. "The big joke is what's the difference between the fiddle and the violin? It's the person who plays it," says Niall Keegan, a traditional flute player. "It's the music you make on it that makes it Irish or English or French or classical or jazz or whatever else. It's how we imagine it and how we create through it that make it and give it character."

"Otherwise, it's just firewood," he says, words that became the film's title.