I just want to correct my "stab". I had a look and found in the create thread "view source"

SELECT NAME="ThreadCategoryID"
OPTION VALUE="1"
OPTION VALUE="2"Lyrics Request
OPTION VALUE="3"Lyrics Add
OPTION VALUE="4"Tune (melody) Request
OPTION VALUE="5"Tune (melody) Add
OPTION VALUE="6"Chords Request
OPTION VALUE="7"Song Origins
OPTION VALUE="8"Review
OPTION VALUE="9"Obituary
OPTION VALUE="0"BS / non-music
OPTION VALUE="14"Folklore
OPTION VALUE="13"Technology

I hadn't realised but each thread now has a "threadcategoryID" that can be changed. Mudcat under the surface is really a multi-forum system now!

Jon