Today, many churches do not have organs, but people still desire to have a wedding processional that is dignified and appropriate, with enough variety to hold interest, and suited to cut-and-paste operations to make it work just right.
Well, here is what you have been looking for.
This piece is in six sections, AABACA structure, with a different and progessively stronger harmony with each succeeding A section. The B and C sections are different melodies, the B section written as a trio and the C section as a duet, which means there is a distinct change in feeling with each section. Each section can flow into any of the other sections as needed, so length can be easily changed.
This was written by a father for his daughter's wedding.
KATIE'S PROCESSIONAL, piano solo by Tom Kirkland, comes in a pdf file of 363K, three pages of music and a license page, four pages in all. Performance time should be approximately 3:10.