Good Music For Organ

Hi,

I`ll be having a traditional church wedding, and the instrument is organ. I have a couple of wedding collections, which have a couple good organ pieces (like Te Deum), but all the other classical collections are played with strings, flute, etc. I`m not sure what pieces transfor to organ or--even better--are ideal for it.

Any suggestions? I`ll probably use Te Deum for the processional (Wagner and I don`t get along), but I`m not sure about the rest.