I think there is a very similar problem in
/t/17209/1
Anyway, I think there is another basic problem:
nless you have a definite identifier that tells formally which brackets you want to keep and which you don't, you end up with manual treatment.
What I mean:
How do you distinguish ...
Walk Right In Belmont (Pm 3019, 4432-2) -> one pair of brackets, has to be treated
from
Blues (My Naughty Sweetie Gives To Me) -> one pair of brackets, must not be treated (any more)?
If the unwanted bracket always has a pattern of two letters, number, komma, numbers, hyphen, number
then this could be expressed as a regular expression and searched for:
Replace with regular expression
Search string: (.. \d+, \d+-\d+)
Replace string:
(leave empty)