In Aggius, between January 1950 and March 1962, the CNSMP (National Centre for the Study of Folk Music) organized five campaigns that, coordinated by Giorgio Nataletti or Diego Carpitella, took advantage of the collaboration of scholars already working in Sardinia such as Alberto Mario Cirese, Antonio Santoni Rugiu, Antonio Sanna, Paolo Cherchi and Pietro Sassu. 
The attention paid to this small village sited in Gallura, in northern Sardinia, was determined by the originality and the richness of the repertoires now largely reproduced on the two enclosed CDs: a huge variety of expressive forms such as lullabies, work songs, serenades, accordion dances and the most representative genre, the cantu a tasgia, the multipart singing which is still considered today as the key element of their cultural identity by the local singers. 
The volume opens with an in-depth introduction and contains the transcription and the Italian translation of the lyrics, some articles about the history of cantu a tasgia in the last century (i.e. the appreciation by Gabriele D’Annunzio and its presence in the play Ci ragiono e canto directed by Dario Fo), highlighting the central role played by two of the most important singers, Salvatore Stangoni and Matteo Peru.
The volume is an essential tool for the knowledge of the musical practices of this small village and, at the same time, a significant example of how a multipart music can change over time both from the formal and expressive point of view and from the meanings and values people express through it in an ever changing social context. 
The book has been published thanks to the contribution of the choir “Galletto di Gallura” from Aggius, as a way to honour its forefathers. Moreover, this book opens a specific section of the aEM book series published by Squilibri, dedicated exclusively to the Sardinian documents preserved in the Archives of Ethnomusicology of the ‘Santa Cecilia National Academy’, and overseen by an editorial board chaired by Ignazio Macchiarella.