This is roughly handled in the Howtos:
In your case, I guess,
Action of the type "Format value" for TITLE
Format string: %title% (%artist%)
Or give an example of what the string looks like before and what it should look like after the treatment.
This is roughly handled in the Howtos:
In your case, I guess,
Action of the type "Format value" for TITLE
Format string: %title% (%artist%)
Or give an example of what the string looks like before and what it should look like after the treatment.