"I’m looking for short preludes to use when the offertory or communion goes long, and something I could play to fill the time."
Many of these pieces may also be played after a final hymn with more elaborate stop registrations.
These are mostly easy to medium difficulty, but with only a few pedal parts that are very easy. If you don’t have a pedalboard, a budding music student could easily play those notes on the keyboard with you.
There are 295 pieces composed for the organ, one on each hymn in A Catholic Book of Hymns.