I only have a couple of opera recordings myself, one of which is John Rutter Requiem - by Reference Recordings. It has got a pipe organ that will knock your socks off!!! Check it out at www.referencerecordings.com . I also recommend another cd called "Pomp and Pipes". It too has an AWESOME pipe organ in a track titled "The Vikings".
Also, please note that Requiem is a disc used as a reference tool by many reviewers, and it is HDCD.
Also, please note that Requiem is a disc used as a reference tool by many reviewers, and it is HDCD.