In the summer of 2007, while "Gato negro-Dragón rojo" was being recorded, Eva Amaral's mother died and the singer was not feeling strong enough to continue. ""First, I thought that by locking myself in the studio I would get through it, but it was not that easy. But here we are, still standing on our feet, thanks to Juan, who really supported me"." And Eva continues ""We thought about quitting. We did not do it, but we thought about it"." Juan also confirms that they almost quit ""It was a bad time and we thought that maybe this was not making us happy. We liked to make music but we did not like to be public figures. There are some things that happen to you that turn you into something like a puppet, like the one on the cover of "Pájaros en la cabeza"."