In the strictest sense, the interior is the people making the music. Any technology (cc, for instance) that facilitates a larger number of people entering into this interior is a good thing. People pay a subscription to *write* a weblog, not to *read*, but when the bowl goes round at a poetry reading, it’s in the audience. Why is that?
I absolutely agree that a song page has good value, especially when a collective forms around the page, like a wiki, with responsibilities for not just the music, but graphic design, css, content etc.