Paul, As Im sure you know DSB stopped touring many many years ago and last gave a full concert in 2009; 13 years ago. You can be assured she knows what she's doing limiting herself to one or two songs on special occasions. The Royal Albert Hall performance would have been carefully planned and rehearsed to make sure the notes were hit. I once witnessed her rehearse her entire show at The Royal Festival Hall, before doing the same thing again in front of an audience about 3 hrs later. (Back then there was not the security there is now. One was able just to open a door from the public area and watch discreetly from the rear of the auditorium). Being fortunate to be in the audience last week I can assure you it was electrifying. Personally, I didn't hold my breath!