The Rough Guide to Rock Music was first published in October 1996. It is currently being revised and expanded and the publishers have decided to make this major work in progress, available online. The Rough Guide to Rock Music website currently contains details of the careers and recordings of more that 1200 bands and artists. If you discover that your favourite musician is missing, you can either request it to be added or you can write and submit your own entry. If it is good enough, it will be added online and will appear in the next edition of the book.
http://www.roughguides.com/music/rock.html