Amazing Leonardo Da Vinci Instrument Brought to Life 500 Years After He Invented It http://www.slate.com/blogs/browbeat/2013/11/18/da_vinci_instrument_the_viola_organista_created_500_years_later_by_slawomir.html … via @slate
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Amazing Leonardo Da Vinci Instrument Brought to Life 500 Years After He Invented It http://www.slate.com/blogs/browbeat/2013/11/18/da_vinci_instrument_the_viola_organista_created_500_years_later_by_slawomir.html … via @slate