From Luisa on BALLAD-L, this might be of interest. She says:

Wanted to call to your attention to a volume recently published on the song culture of the Mondine (rice-paddy workers) of the Po Valley, Italy, Senti le rane che cantano. It won the Nigra - Leydi prize for 2005 (includes sound recordings, transcriptions, photographs, etc.): 

Senti le rane che cantano