Sorting cards by specific tags

For Cena Sztuki I would like to show

- All Artist cards

- Sorted by the Artist' last name

The Artist cards are named by the first and last name of the artist. Every artist card then includes a field "first name" and a field "last name". So basicly the artist cards are tagged by the first and last name. How do I now sort the artist. ards by the last name of the artist?

I tried a bit and couldnt figure it out. With {"right":"Nazwiska","sort":"content"} I found all cards of the last name, and then sorted it alphabetically. But instead of showing now this list of last name cards, how do I show the full artist name (the initial card that was tagged)? when I use that search with found_by, then I loose the sorting. Append and Prepend wont help, since I actually want to shorten the resultingncard name.

Thanks much

Philipp