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- http://postbubbleculture.blogs.wm.edu/2009/10/26/japanese-music-timeline/
- http://jtrad.columbia.jp/eng/history01.html
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- http://www.naxos.com/education/brief_history.asp
- http://www.theatlantic.com/entertainment/archive/2012/06/how-j-pop-stars-gain-from-the-wests-obsession-with-weird-japan/258565/
- http://www.ashgatepublishing.com/pdf/SamplePages/Ashgate_Research_Companion_to_Japanese_Music_Ch1.pdf