Ghost Music by An Yu

From the author of the "original and electric" Braised Pork (Time), An Yu's enchanting and contemplative novel of music and mushrooms follows a former concert pianist searching for the truth about a vanished musician
For three years, Song Yan has filled the emptiness of her Beijing apartment with the tentative notes of her young piano students. She gave up on her own career as a concert pianist many years ago, but her husband Bowen, an executive at a car company, has long rebuffed her pleas to have a child. He resists even when his mother arrives from the southwestern Chinese region of Yunnan and begins her own campaign for a grandchild. As tension in the household rises, it becomes harder for Song Yan to keep her usual placid demeanor, especially since she is troubled by dreams of a doorless room she can't escape, populated only by a strange orange mushroom.
When a parcel of mushrooms native to her mother-in-law's province is delivered...