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in iedergeval heel interessant om te zien: alle volumes ooit verkocht van alle verschillende dragers: tape, cd, mp3.
facts that figure..
http://www.informationisbeautiful.net/2009/the-death-of-the-music-industry/
"Very good infographic from the New York Times conveys the dwindling death knells of the music industry. Analysts give it 10 years."
