Four very beastly songs, Crust Punk and wild rock'n'roll. 9 minutes in which they do not give a break, fast and energetic rhythms, with texts that already the titles say it all "What do you need to Demonstrate" about the big-mouthed male, (a theme similar to that of "Chick Habit" of fire), "Walls por Derribar", "Que Tu Motor Nunca Se Pare" (With a firm step forward it always rocks like a hurricane... ) and "Contra Viento y Marea" (...Run after what moves you It's your life, it's in your hand reaching the end of the day proud to try).