The quire consists of a series of stalls arranged along the midsection of the nave just before the transept and coronation area. It is separated from the remainder of the nave by a screen, which the image above shows. If the viewer of that image were to turn around, they would see the transept spreading to his right and left and the main apse directly in front of him.
This is where the monks of the abbey sit to sing their plainsong according to the canonical hours and at mass. In keeping with the architectural idiom of the abbey, the quire is richly decorated.