The term 'AREA BEHIND THE CHOIR' can be broken down into four crossword solutions: APSE (4 letters), YARD (4 letters), LAKE (4 letters), and STALL (5 letters). An APSE is a semicircular or polygonal recess in a church, usually at the end of the choir or chancel. A YARD is an open area of land, often surrounded by a fence, used for a specific purpose such as a garden or play area. A LAKE is a large body of water surrounded by land. Finally, a STALL is a compartment for an animal, typically in a stable or barn. Therefore, the area behind the choir could be a semicircular or polygonal recess, an open area of land, a large body of water, or a compartment for an animal.