To my taste too many authors in the one line. It is more a tourist attraction, that's could be understandable. However, I have also visited the concert at Trafalgar Square in London, in the church too with the same aim, for tourists and only one author mostly was on the programme. I am happy to listen to the one author, it allows me to get into depth. And what I appreciate when all attendees are dressed solemnly, that contributes to the atmosphere. The rest was a wonderful experience.