For information, reviews, links, and commentary, here is the best music site I know, AllMusic.com. It covers everything in music, not just the major stars.
Check out this page on the Byrds, for one illustrative example. Here is everything you ever wanted to know about Zakir Hussain.
Addendum: Thanks to Eric Dixon for helping to correct the links. He relates:
It’s a quirk of allmusic.com’s search engine that it will return pages with a generic “amg.dll” URL for any page that pops up directly from a search (as opposed to choosing the correct page from a list of possible matches after a search). If you want to get a replicable URL you need to click on a link for the artist, or album, or song, you want. And it’s probably a good idea to then remove the “&uid=”… database query from the URL, which is user-specific.