Yuki Kojima is a Japanese musician who specializes in the street organ--a hand-cranked instrument that uses bellows to pump air through pipes. I don't think that it takes advanced skill to operate one--it's a sort of music box that uses cardboard segments as a control mechanism. But probably creating the cards is a demanding task worthy of a skilled artisan.
Kojima's YouTube channel has many popular tunes from video games, such as Chrono Trigger and Super Mario Bros. But classic hard rock is my preference and music doesn't get any better than "Thunderstruck" by AC/DC.
-via Laughing Squid
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