Dr. Bombay:
Dude…can’t you summarize? Must I read that whole long article?
I try not to read too much. I much prefer blissful ignorance.
A Trope is an interpolation in a liturgical text, or the embellishment brought about by interpolation (i.e. by introductions, insertions, or additions).
newadvent.org/cathen/15065a.htm
That’s why I consider the dominant dorm version of the Agnus Dei at Notre Dame to be a trope, long after tropes were officially suppressed:
Peace I leave with you my friends, my friends, and I am with you til the end.
Peace I leave with you my friends, my friends, and I am with you til the eeeeeend
Lamb of God, you take away the sins of the world, have mercy on uuuuuus
Peace I leave with you my friends, my friends
Lamb of God, you take away the sins of the world, have mercy on uuuuuus
Peace I leave with you my friends, my friends
Lamb of God, you take away the sins of the world, grant us
Peace I leave with you my friends, my friends, and I am with you til the end.
Notice: The actual liturgical text makes up a minority of the words in its “setting.” This in a rite that was designed to eliminate “accretions” (and actually did - supposedly - eliminate this one).