In a small street in Brussels there is an unusual concentration of pianists: first, the home of Martha Argerich; the other, that of the Time-Lechner, four generations of pianistic wonders. With just fourteen, Natasha Binder is the heir to a dynasty, his last great promise. In the diaries of his mother, who was also a prodigious child in the family videos, pianists in the house next door, Natasha seeks answers to a key question: what is, in short, be a pianist?