Thanks for submitting me. I am a singer and choir conductor. Currently working with Zoom. Jitsi is fancied because of the better security. However: how good a match is Jitsi for online singing together with - lets say - 50 people with a delay less then 20ms. Provided of course cabled internet, the necessary hard- and software equipment like audio interface and Asio4all. I am all set in that area. Love to hear your answers!