[jrs235]

I would like to see a few different charts:

1. Total number of distinct songs sold. and 2. Total length of distinct music tracks.

If we assume that a CD consists of ten 3 minute songs (30 minutes) we can see how much effort the "artists" put in to recording their songs [that were sold, due to being included on the CDs] to the revenue generated vs single tracks. I wonder this because if artists could focus on playing gigs, finding the popular songs and only spending effort and time recording those songs and digitizing them for sale, then the revenue per hour of effort could result in a drastically better "hourly rate" for recording.

(There's nothing like "doing work" just to do work and have it "thrown away". Many developers know this feeling.)

EDIT: I hope you can see where I am trying to go. I want to compare distinct songs sold to sales and aggregated distinct song length to sales. Perhaps someone can elaborate and better communicate what I'm trying to say.