Change Featuring Artists

Hi guys, I'd like to automatically change Feat. Nana to (Feat. Nana) within my artists field. This "Feat. Nana" is just an example, I have thousands...

You could replace the Word "Feat." with "(Feat."
The bigger problem is to detect the end of your featured Artist.
Is this always at the end of your ARTIST field?

Or do you also have ARTIST content like
Mike feat. Joe and other Jim feat. Jake?

As the OP just gave

the answer ist:
Create an action of the type "Format value" or use Convert>Tag-Tag for ARTIST
Formatstring: %artist%)

And there are so many threads that deal with any kind of featured artist, i would strongly suggest the search function in the forum.
The search words "feat parenthesis" yield among many others this thread:

This works: Formatstring: %artist%), but it only puts a parenthesis at the end of feat. artist. I would like a parenthesis at the beginning of Feat.

either put @LyricsLover 's an my post together
or read the linked thread.