I cannot appear to get this to work, ive tried adapting the other regex expressions I have found on here and a very similar one which uses () but I cannot get it to work with .
Heres what I am trying to achieve:
TITLE - Song name [Tune of the Week]
I would like to move the text in the  out of the TITLE tag and move to a new tag called FEATURE. The  and the text in the TITLE would then be removed.
I have tried using a very similar Guess Values action which I use to remove (Disc #) from MusicBrainz album tags and populate the DISCNUMBER tag but this doesnt work:
Source format: %feature%$regexp(%title%,(.) [(.)],$2+++$1)
Guessing pattern: %feature%+++%title%