If you are contemplating the future of music sales revenue, the most alarming thing about inexpensive (they actually call it “premium”) all-you-can-eat streaming models (Spotify, MOG) where music fans pay roughly $72.00 a year (for example) for endless access to all the music in the world (anytime, anywhere, anyplace), is that the $72.00 is divided by (all songs consumed times each song’s play-frequency).