How to clear the composer's name (already in %COMPOSER%) from %TITLE% ?
You'll need to supply a little more information then that. So the composer is displayed in the title, eh? What's it look like:
Title (Composer)
Composer - Title
Title - Composer
Title_Composer
etc.
This information will aid in someone helping you with this problem. 
The title contains the composer's name at the beginning, separator is a mix of spaces, commas, and/or dashes. (There may be something before composer , but I can delete that)
e.g. :
Stravinsky - Song of the Nightingale - I. Presto
Chopin - Préludes
313 - Schumann - Cello Concerto in A minor - I. Nicht zu schnell
Brahms: Clarinet Quintet - Con Moto
I guess I have to delete (="replace regular expression" by nothing) the characters before the first dash (+dash and space after) ? but don't know what exactly write for that !
So, what is the regular expression for selecting the characters before a ...dash (for instance) ?
^.+?\s-\s
on
Stravinsky - Song of the Nightingale - I. Presto
->
Song of the Nightingale - I. Presto
- Thanks a lot !