I recently went to St Louis Catholic Church while on a business trip in New Orleans. After mass I recorded some of the footage played by the organist.

I was wondering if anyone can tell me what this particular piece is. I'm not too familiar with organ music, but do have some Philip Glass and Bach albums, just haven't listened to them in a while. Any help would be appreciated. The YouTube clip is below.

Organ Music, St. Louis Catholic Church, New Orleans - YouTube (http://www.youtube.com/watch?v=feX2coBpqP4)

Thanks in advance