O hi Thank you first of all for the article looks really good I see that you are trying to provide citation support to the article If you see my contributions you will realize I am not adding anything off the top of my head Just wanted to add by my firsthand knowledge of the Basque popular culture a fact not reflected in the article the  hunt of the whale and the imprint left in the peoples culture By the way the lyrics give a detailed account of how the event took place The importance of the song is confirmed here httphistoriasderockestlBenitoLertxundihtm Spanish if this is what you are looking for the youtube of course wont provide more details than stats