Monster Piano Concert

[Alde]

I am interested in organizing a Monster Piano Concert in my city.  I would like to know if anybody has seen or participated in one.  I understand that it will take a lot of organizing.  I have heard of a Monster Piano Concert that had 40 pianists!  Someone told me that the music is based on piano duo repertoire.  I know that sheet music for 2 pianos 8 hands is in print.

Question:
1. How many pianists?
2. How many pianos?
3. Was there a conductor?
4. Did you use grand pianos, uprights or electronic pianos?
5. What music was on the program?
6. How was the attendance?

I have seen the following post.
https://www.pianostreet.com/smf/index.php/topic,11882.msg124558.html#msg124558

[arensky]

You should research Gottschalk, he organized and loved these back around the time of the American Civil War. A quick googling led me to this, check it out....https://www.ups.edu/x2743.xml