Hi,
Some thoughts on John Compton's work, from one with no specialist knowldge or expertise whatsoever...
I remember attending a recital in the early 80's at St George's, Stockport, shortly after the organ had been shorn of most of it's Comptom additions and returned more or less to its late 19C specification (give or take a few mutations and pedal stops). I perused the the programme notes and nodded sagely as they waxed eloquent about how the mistakes of the past had been rectifed, the organ had been retored to its former glory, it used to be far too loud anyway, etc. Then the (first rate) recitalist began his programme. There was, it must be said, clarity and cohesion to the sound, and there were some lovely registrations to be heard. However, full organ sounded as if it was being borne on the wind from the centre of Manchester. One might say that something had been lost in the pusuit of artisitc purity.
I was interestd by the comments made on the effctiveness of JC's extended mixtures. The only monster Compton I've ever played myself is the west end organ at Derby Cathedral. I ended up playing a Bruhns praeludum after the service, mainly because the verger had warned me that ther Director of Music was in the congregation and that he got annoyed with visiting organists who over-did the tubas. The Gt plenum turned out to be a wonderful, sparkly sound that was superbly fit for task.