The National put out a official 'bootleg' recording of two nights of concerts using the Mike "the Mike" Millard method, called Juicy Sonic Magic[0]. Only physically released on triple cassette though I think you can stream it. Sort of tangential to this conversation but it really captures the energy of a live show in a completely different way. Highly recommend checking out if you're a fan of the band, old bootleg recording techniques, or live recordings in general.
0: https://www.discogs.com/master/1664187-The-National-Juicy-So...