Hiya John 'n' Tony,
Yes, Howard is a very cool player, I remember some of his demo tricks from the 80's ... he was quite capable of making a mediocre instrument sound top-notch, which wasn't a good thing for us retailers as it led to customer remorse - mainly because the customer couldn't make the organ sound like Howard did at the demonstration evening
He used to play Bach's Organ Toccata & Fugue, his version of the Toccata wasn't all that, (as I remember), but Howard's arrangement of the fugue was awesome, he mixed a Beatles pop song within the fugue and it was very effective ... he demonstrated for Eminent or Baldwin organs, can't recall now
All the best.
Mike