Dear MARMAM members, I am happy to share the exciting data we are bringing in our lattes publication for MMS journal:Gonçalves, M.I., Djokic, D., Baumgarten, J., Marcondes, M.C.C., Padovese, L.R., Eugênio, L.D.S., Sousa-Lima, R. Abrupt change in humpback whale song from Brazil suggests cultural revolutions may occur in the South Atlantic. Marine Mammal Science, 2023.  - DOI:  - 10.1111/mms.13093 https://www.researchgate.net/publication/376072322_Abrupt_change_in_humpback... Five decades after the first description of the humpback whale song in the Northern Hemisphere, and two decades after the first description of a cultural revolution in the eastern Australian population, this Note provides evidence of an abrupt change (leastways) of the song occurred in 2018 season, in breeding stock A. This intense song change measured by simplified Levenshtein distance implies cultural revolutions could be happening in the Atlantic ocean as well, further stressing the possibility of Southern Hemisphere Cultural Exchange (SHCE) phenomenon.This work also revisited standard definitions of humpback whale song, its structure, culture and common methodology. Please get in touch for a copy of the manuscript (as the Open access option is not so open when funds are restricted):divna.divna@yahoo.com If interested in Dynamics of humpback whale song of South America, make sure to explore our other papers from the area: De Weerdt, J.,  Djokic, D., Sousa-Lima, R., Pace, F. First song description of the humpback whales, Megaptera novaeangliae (Balaenopteridae: Artiodactyla), breeding off Nicaragua, Revista de Biología Tropical, 2023 Schall, E., Djokic, D., Ross-Marsh, E.C., Oña, J., Denkinger, J., Sousa-Lima, R. et al. Song recordings suggest feeding ground sharing in Southern Hemisphere humpback whales. Scientific Reports, 2022 Malige, F., Djokic, D., Patris, J., Sousa-Lima, R. , Glotin, H. Use of recurrence plots for identification and extraction of patterns in humpback whale song recordings. Bioacoustics, 2020 Happy holidays!Divna --Divna DjokicPhD at Laboratory of Bioacoustics (LaB)Universidade Federal do Rio Grande do Norte (UFRN), Brazilhttps://www.lab.bio.br/ Skype: divna.djthedivna@gmail.com