The hymn sung by the church choir was adapted from one of Bach's four-part chorales.

chorales 是名词 chorale 的复数形式。chorale 来自德语，指"合唱曲"或"众赞歌"，特指基督教教堂中由会众齐唱的赞美诗。在音乐术语中，chorale 常指四声部的宗教合唱作品。