We had a few glitches in setting up and running, but overall it was a success.

I had posted to the organizers list to focus on audio/video quality for ZOOM concerts before the event.
What I've heard from a couple people I trust (musician, sound person) is that the concert
audio and video was good.

My sense of what made ZOOM audio good, i.e. audio didn't jump or break up or ...:

    original sound "on"
    and followed Yale School of Music recommendations for those settings

    Gigabit Internet to host's home
    wired connection to Internet provider's router (avoided WiFi)
    no one else running ZOOM off the host's Internet
    i.e. reduced competing bandwidth apps

    not sure of this next piece, but believe RME's driver for Fireface UFX+
        takes over CPU to provide industry best latency
    my running dedicated ZOOM on new-ish Lenovo T14
        with a lower CPU demands interface passing sound to/from
        Lenovo T420s running TotalMix FX for the UFX+
        Note the UFX+ supports 188 channels at 24/192 which may explain
            it's driver taking over CPU cycles from other programs
    but I cannot guarantee that that was, indeed, a necessary precaution
        to ensure no ZOOM audio hiccups.

Good ZOOM video came from:

    high quality Internet noted above

    high quality digital camera in auto mode
        rigged to run off AC for any length of time
        (pro grade zoom lens, constant f2.8, pan and tilt fluid head)

    digital camera to HDMI to HDMI capture card
        DIGITNOW USB Video Capture Card 4k/60Hz HDR10
        which provided HDMI pass through (not used, insufficient setup time)
        and has aluminum case to help dissipate heat --crucial w/ sun and afternoon temps

    I had asked pro videographer and pro photographer friends to run camera but they were busy
        this would have helped, e.g. when audience had their cell phone flashlights on
        and were waving them back and forth our MC panned the camera to them, but that was awkward

Odd gotcha:

    setup outdoors, sun on laptops while rigging sound/video
    when turned on, laptops immediately shut down from overheat (sun)
    taped umbrellas to mic stands and position fan on sound table
    pointed at laptops ... got temp down
    hosts setup 3 shade 'sails' for my table and for the musicians

Not wanting to bore or off-topic this list.
But getting a good ZOOM concert is *not* trivial.
I'll be glad to answer questions off line or via phone.
    770-654-5098
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Related, the silent auction was setup on Facebook and that worked out ok.
I believe 150 or so folks signed up for the silent auction and a couple thousand
was raised off it.

Whether we get to it or not, the intent is to write up what we learned
and make it available within our community.
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Sincerely,
Heitzso