Trillirivos

I just discovered I've been using the wrong pronunciation for "trillirivos!" The word appears in one section of Carmina Burana, the piece we're doing for our concert on July 2nd. All along I've been singing "trillilivos," but it's actually "trillirivos." I didn't notice because most of the Sopranos make almost no differentiation between "L" and "R." Actually, I don't think the audience is going to notice, either. Since it's supposed to be a happy sound, I won't have any difficulty because I'll be enjoying my private little joke.