Since there was no answer until now, I thought I give another example directly from the RacksAndTags site:

Here is a list of CDs, that are listed under artist 'Bruce Springsteen':
[url]http://www.racksandtags.com/vendenbos/artists/Bruce-Springsteen/[/url]

This list includes CDs with the artists 'Bruce Springsteen' and also 'Bruce Springsteen & The E Street Band'.

In the view 'Artists' only 'Bruce Springsteen' is listed:
[url]http://www.racksandtags.com/vendenbos/artists/[/url]

My question is: How can this be done. I simply want to have the same but don't know how.

Thanks,
Mathias