Ordinary Grace by William Kent Krueger

The Drum Family lives in a small town south of Mankato in Minnesota.  The father is a pastor to three congregations in the vicinity.  The mother is talented soprano and conducts the local chorus.  The daughter outshines her mother due to the same teacher.  She composes, she plays, she astounds.  There are two brothers, one is the narrator of the story and often gets himself and his brother, who has a stuttering problem, into difficulty.
The story takes place post-World War two.  A blind man, the teacher, son of the local wealthy family, and his sister, who is deaf, seem to only be befriended by the Drum family.  The boys help the deaf woman with her garden.  The father plays chess with the man.  The mother has fond memories of the man she was going to marry, before he went off to war and lost his sight and his beauty.  The daughter is typing up his memoir.  But the story is not about an idyllic life.  It is about death, which seems to occur repeatedly in the story.  One death in particular leads the narrator to want to solve the puzzle that seems beyond his reach.  But he is persistent.