Absolutely Naz, but Toccata and Fugue, Soader, is that piece we all associate with Phantom of the Opera - Da Da Daaaaaa...Da Da Da Da Daa Daaaaa... you get the idea.
it's not organ but you could try 'Danse Macabre' By Saint-Saens (they used it on the beginning of the jonathan creek programs)
and also 'To the shock of Miss Louise', which is organ that can be found on 'The Lost Boys' soundtrack.