Help with hooks and taxonomies: Modifying the posts query in wordpress?

Question

in wordpress you can do the following:

http://example.com/tag/jazz,blues/ (returns tags page with posts tagged with jazz OR blues)

http://example.com/tag/jazz+blues/ (returns tags page with posts tagged with jazz AND blues)

I want to be able to do the same thing with other taxonomies other than the "tag" taxonomy.

I've created a "music" taxonomy and am trying the following:

http://example.com/music/jazz/ (WORKS)

http://example.com/music/jazz,blues/ (DOES NOT WORK)

http://example.com/music/jazz+blues/ (DOES NOT WORK)

Is there a hook before the query which will allow me to modify the query using $wp_query (which returns info about the current request) ... OR can I hook in before the posts are displayed, requery for new posts using new criteria (would probably only happen on the particular taxonomy page) ??

Answer 1

Custom Taxonomies?

Answer 2

My problem above was solved by disabling some plugins ... I had a few plugins related to category reordering and exclusions, I think they were interfering in some way.