"In the end, it was a Bach motet that shooed me away - choristers weren't damnably bad, but the organist's only hope for salvation was a bullet through the brain. "
A 'backstreet church' in Bruges, one of the many he might conceivably be describing
Creative Commons AttributionA 'backstreet church' in Bruges, one of the many he might conceivably be describing in this passage - Credit: Jim Linwood

A motet is a piece of choral music in several parts which takes as its source of inspiration the bible. Its history as a genre dates back to the twelth-century. There are six surviving Bach motets (some claim more). They are thought to have been composed for use at funerals.

Paul Hillier – Motet "Jesu, Meine Freude", BWV 227: Gute nacht, O Wesen