Enter a clue or pattern or both:
The Clue
It's unaccompanied in church (10 letter answer)
The Answer
PLAINCHANT
Tags
Notes
The answer PLAINCHANT is so rare that it appears less than once every 2500 puzzles.
Definition
PLAINCHANT as a noun:
1. (plainsong, plainchant, Gregorian chant) = a liturgical chant of the Roman Catholic Church