This march or trumpet tune has a distinct air of regality, making it suitable for any ceremonial occasion. You could use it as a prelude, postlude, wedding recessional, or procession requiring formal grandeur! Phil writes this in a way to showcase a solo reed if the organ has it. I recored this on the Casavant, opus 3742 (1995), Bellevue, Washington organ model by Sonus Paradisi using Hauptwerk.
Score: https://www.sheetmusicplus.com/en/product/royal-march-trumpet-tune-in-a-flat-organ-work-by-phil-lehenbauer-22717170.html?aff_id=478282