I think this is the same {dweeb] appearing at the Cathedral as have a Youtube channel. The NightChurch project certainly is putting on music. The Jazz last week was excellent. Mostly standards so there was nothing too experimental. I did some extracts on YouTube, search on Cathdral Jaxzz or start here, The Way You Look Tonight.

A poster for the NightChurch event on 26th June is available for download.

Many things can happen over the same weekend. Maybe enough will be recorded to catch what you missed later on.