Merging Different Fields?

Is this possible? I have a lot of soundtracks, so I want the album and artist to be the name of the movie soundtrack. I want the title field to contain the actual artist and track title. I can do this manually but it's so time consuming. Any tips?

Make a new action

Action type: Format value
Field: TITLE
Format string: %artist% - %title%

Thank you very much. I'm not very good with formatting variables. Thank you again.