Half-book, half-screen, this François Bayle's composite work is meant not only to be read, but also to be heard-seen as well as perused in order to navigate through it more easily. The reader’s ear is solicited through diverse modalities that will bring into play the rapprochement of two intertwined approaches, however very different and opposable with the goal of observing the listening”. Bilingual : French-English. 151 musical examples grouped in 53 themes