According to the most recent count I could find, the total number of songs that have been recorded on the planet is 180 million. Using standard MP3 compression, the total volume of recorded music for humans would fit into 720 terabytes. Today 720 terabytes sells for $72,000 and fills a closet. In ten years it will sell for $700 and fit into your pocket. Very soon you’ll be able to carry around all the music of humankind in your pants. On the other hand, if this library is so minuscule, why even bother to carry it around when you could get all music of the world in the cloud streamed to you on
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