Dears I am Brazilian biologist at the Federal Rural University of Rio de Janeiro. I'm working with humpback whale vocal repertoire in Brazil. I intend to compare the songs of South America and Africa. I have sound samples in Brazil, in the Abrolhos's region from 2005 to 2013 and I need to compare these sounds with samples of sounds from other regions of South America and Africa. For this purpose is necessary some samples humpback whale's songs from these regions. I am looking for colaboration to do this work in partnership. Those interested in collaborating and be part of this project, please send me an email to duducabral1102@hotmail.com Sincerely Eduardo Cabral Casado Lima