Well Craig, I had no idea what this was about, so when I got some time I listened to samples from the Phantom of the Opera soundtrack album at Amazon. Although you say organ/orchestral more than solo organ, what the samples had, especially the overture, was the organ with a heavy drum-beat accompaniment. Lots of solo organ around, of course, such as Michael Murray's "Organ Blaster" recordings. When organ with orchestra is brought up though, my first thought is the Saint-Saens Symphony no. 3("Organ Symphony"), which you should certainly have in your collection. A fine hybrid SACD taken from concerts inaugurating their new organ in Philadelphia also includes other
works for organ with orchestra in addition to the Saint-Saens and might be along the lines of what you're looking for.
Whopper still unknown to me despite all advertising efforts, John B.
