This is great fun! He obviously knows his instrument, knows his acoustic and did everything IMHO in the best possible taste. Organ improvisation is very subjective and to me seems to go in cycles as far as style and approach are concerned. Some of the best improvisation I have heard recently has come from players not setting out to show off their technique etc. but to produce something new and satisfying. I also believe that something simple can be as effective as something complex. Here in the UK there seems to be a move away from just ‘trying to sound French’ and some of the best ‘improvisation educators’ such as Ronny Krippner while acknowledging that there are national schools of improvisation also push for showing one’s own identity. One can still experience the ubiquitous Anglican ramblings (often on Organists’ Association visits!) but more often than not better things can be heard. I still can not get to grips with improvisiations on silent films however..but this is a purely personal view!