Another perspective on the matter
I've long been interested in the idea behind the Long Tail, because of the possibilities it seems to offer to those who implement it. However, I have the impression that the Long Tail for retailers and the Long Tail for creators are two different things, and that may be muddying the water further.
Case in point: webcomics. There are significant numbers of artists out there making daily or several-times-weekly comics and making a living out of it. Not even close to all of them, of course, but then again not everyone who plays in a band makes their living out of it. The point as I understand it with most of the high-profile and successful webcomic crowd is that they find ways to get paid for the same thing multiple times. So the comic shows for free on the website on the day (but money comes in from ads). Then the comic is collected into a dead-tree-edition and sold. Then the original art for the strip is sold (assuming someone wants to buy it, that is). If the largest part of the work is creating the original artwork, that's 3 revenue streams for the same piece of work (over enough time to make them all viable). Not to mention the possibility of special editions of books, sketches sold at conventions, and merchandise.
This all relies on the cartoonist being able to establish the comic and find an audience, but that's a pretty universal issue for entertainers. While it may not be possible to find exact analogues for these revenue streams for musicians, I would be interested in seeing someone write up a detailed analysis, and particularly to find out whether there are singers/musicians out there working to the same model and making a living out of it.


