Kyrielle
A litany beginning with the words.


like the short kyria elason? (lord forgive me, i know not how to spell in english, and i am far worse when attempting latin!)

an RC prayer,
kyria elason, chrystae elason, (lord forgive me, christ forgive me)
these are the chanted (or receited answers) to 'litanies.'
So the priest would intone:
for the sins of the world. --or other 'prayers'
and the congregation would respond,
with kryia eleson. (or chrystia elason)

now days, done in english, (lord forgive me, christ forgive me)
when done in gregorian chant, it has an almost hypnotic quality..