How can I obtain a database of the artists whose work is represented
on itunes along with, if possible, profile and genre information? Is
there a database that exists where I can look at this information
without having to click individually on each band name in itunes?
If there is a company that offers a VERY comprehensive database of
musicians/ bands, etc. for a fee, I would be interested in that as
well. I do not need to be able to download mp3s, etc. I need a massive
list of bands/ artists and genre & profile information.
Thank you so much!

Have you seen AllMusic?

http://www.allmusic.com/