https://www.sciencedaily.com/releases/2015/02/150202132611.htm http://neurosciencenews.com/psychology-music-emotion-culture-1702/ https://www.sciencedaily.com/releases/2015/06/150603124545.htm http://www.oeaw.ac.at/kal/agm/ http://io9.gizmodo.com/5849677/100000-year-old-art-kit-found-in-south-africa http://www.bbc.com/news/science-environment-25465102 http://www.nytimes.com/2010/01/12/science/12obneander.html?_r=0 Roman Waterorgan
https://www.youtube.com/watch?v=8SZX-GovKrE