5,207 songs.

So I have 5,207 songs on my iPod. I listened to a cumulative of 7 hours of music on shuffle and knew every song pretty well. You say of course it's your music. But think about how much music that is to understand and know. Think about how many guitar riffs and vocal meldoies you know. How man drum fills or lyrics. That is so much information to digest. Perhaps, our time would be better spent listeing to Stephen Hawking books on tape?