filename to tag help

I store music in the following folder structure...

Artist\Title

I have been using %artist%\%title% but now I also want the artist to fill in the album field. What string do I use that will put the artist folder in both the Artist and Album field?

Whatever it may be good for to put the artist in the album field instead of the album or title:
you would either have to run the converter twice but with different masks:
run 1: %artist%\%title% (like you did)
run 2: %album%\%dummy%

Or you use an action as decribed in /t/967/1