Trettondagskonsert = Thirteenth day concert 

Benny and his wife Mona attended this concert where Bryn Terfel & Nina Stemme sang Benny's song Give Me My Song  (an English language version of Saknadens Rum and Kärlekens tid, with English lyrics by Ylva Egehorn (who also wrote the Swedish lyrics).

Benny and his wife Mona were shown sitting in the audience straight after their performance (which was the very last of the evening) but unfortunately were not shown in any spotlights. You can just about see Benny in the middle of the screen with Mona sitting to his right.

Baluns på Berwaldhallen (Benny), 2002;
Trettondagskonsert (Benny), 2006;

Thanks to Mohammed, Paul Carter c/o ABBAMAIL (no longer online) and Jan Bach.
YouTube link c/o baflat