I remember reading somewhere (but evidently not in the liner notes) that the piano phrase in "Procession" (at ~1:39) is E G B D F, which - like the album title Every Good Boy Deserves Favour - refers to what notes appear on the lines in musical notation (in treble clef, at least). I listened to the album this afternoon, and afterwards I confirmed that this is indeed the case.
I also realized that - to some degree - this illustrates the processional idea of the song. Near the beginning, there's this basic spelling out of what notes go where on the staff, but by the end, there are fully realized melodies, so there's a development not only of musical style but also of musical ability and proficiency.
