need these questions answered:

how many music industry advice books for artists were published in 2004

how many volumes were sold in the US in 2004

bonus if you can find answers to these:  

are there any statistics on the number of independent musicians,
songwriters, bands and perfomrers in the US

what is the statistic for major record label dela signings annually?

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Clarification of Question by mpaige-ga on 06 Jun 2005 15:22 PDT

only need answer to one question now.

how many music advice books were purchased in 2004?

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Clarification of Question by mpaige-ga on 06 Jun 2005 15:35 PDT

actually this is what i need:

how many music industry advice books were purchased AND/OR the sales
volume of those books.

i already got the statistic for the number of music books published in
2004 from bookwire.com Here are the links to that. Maybe someone can
find out somthing more from somewhere else...

http://bookwire.com/bookwire/decadebookproduction.html 
and
http://bookwire.com/bookwire/trade.html