Yeah, maybe. Certainly most bands and singer songwriters in the world aren’t signed. Maybe this data means only pessimistic people are spending the most on music. Or optimistic, happy people want to bring their mood down. If teens and twenty somethings spend the most of music, isn’t this just data about them? And since music is available in more formats in the last few years, could music in major keys, in faster BPM, be consumed in these other formats, and thus not be counted in sales? (Isn’t Top 40 just sales?) Or maybe music is like fashion, can only buy what they sell in the stores, and this is what is available. Maybe this data set can’t lead to definitive conclusions about anything except what it measures. Maybe this post is too much postulating and not enough scientizing. Somedays we are the means, other days the ends.