I was at Google OSJam last night (Thursday 28th July 2011), and somebody mentioned something peripherally related to rap music.
There are many different types of open-source expression.
Here's a few examples:
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[open-source cola](http://en.wikipedia.org/wiki/OpenCola_(drink\))
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plenty of open-source software that we all know and love.
Rap music, and beat poetry are pretty fantastic forms of personal expression. I want to see whether we can build a community of rap / hip-hop musicians with a passion for open-source music and creativity.