"Nadie Sabe A Donde Va" is inspired by the bombings which occurred on 11 March 2004 in Madrid at the Atocha train station. "El Demonio En Casa" has been considered the "most witty and funny" song of the album. The lyrics of the song are about a man recounting how his woman changed his life. "La Vida Está De Luto" is inspired by the actual situation of the planet, a place where man is accustomed to taking advantage of those weaker. "Ni Tu Ni Yo" is the only duet on the album, as it features Mexican ranchera singer Paquita la del Barrio. The song was composed so that when it is heard, it "gives and immediate desire of drinking tequila" according to Arjona. In an interview with newspaper "Reforma", Arjona talked about the collaboration with Barrio, stating that "it was very special, because she does not make duets with someone she does not like", agreeing that he did not duet either. "Niña Buena" is dedicated to women who cannot stay in the same place and dislike having a boring life.