A cellist of La Scala Opera House in Milan married a boisterous woman, whom he had already fallen in love with during childhood. One day, after years of living together, she disappears. In her place there is a ticket, and a life to rebuild in the mystery of the past and many relationships - the family, the children, the same woman - all of which have remained dormant for too long. Daria Bignardi, author of L'acustica perfetta, in conversation with Giovanna Zucconi.