FIRST  CLICK: http://www.thomson.co.uk/blog/wp-content/uploads/infographic/interactive-music-map/index.html

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The map shows the evolution of top level dance genres only, and does not delve into all possible sub-genres.

It is often difficult to pin-point the beginning of a genre to a single year, so we have placed the birth of each genre within 5-year periods.

When the explosion of dance music arrived in the 80s, many genres arrived in the same 5-year period as the genres they influenced. In this situation, the ‘influencer’ genre starts to fade in on the map at the time the influencing line appears.

Non-dance music genres which influenced dance music are also included, but their own influences are not shown.

Often where a genre was first born was not the location it eventually gained most popularity.

The sources used to create the map include Bass CultureLast Night A DJ Saved My Life,The All Music Guide to Electronica, and Wikipedia.

This is a fairly complex subject and much debate exists not only around how you define various genres of music, but also where they initially came from. If you’d like to share your thoughts, we’d love to hear from you in the comments below.
+ INFO : http://www.thomson.co.uk/blog/2011/10/how-music-travels-infographic/#.Un6qpvlFV8E