Hello from Japan! I discovered TrainJazz this morning and enjoyed it with my morning coffee — the idea of turning subway movements into music is quietly beautiful.
I would love to see a Japanese version someday. Tokyo’s train network is one of the most complex in the world, and I imagine the music it would make would be extraordinary. Thank you for creating something so thoughtful.
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It would be cool to have multiple selectable cities, and compare them like that. I suppose to do it 'fairly' though you'd want to offset them so the peak times etc. lined up, so they all had a commuter rush at once. (London would be buzzing as I write, but the OP is pretty quiet – middle of the night in New York.)