Move AlbumArtist and add ()

Hi, I really appreciate the help in this great forum and software

I have this:
TITLE..............................................................ALBUMARTIST
Turandot: Final Chorus...................................Puccini

I need this please:
TITLE..............................................................ALBUMARTIST
Turandot: Final Chorus (Puccini).....................Leave in blank

Thanks a lot

Action "Format value" Field : %TITLE% Formatstring: %TITLE%' ('%ALBUMARTIST%')' Action "Remove fields" Fields to remove: ALBUMARTIST

... or ...

Action "Guess values" Source format : %TITLE%' ('%ALBUMARTIST%')###' Guessing pattern: %TITLE%###%ALBUMARTIST%

DD.20150820.0743.CEST