Mariano Martínez and Ciro Pertusi are vegetarians and so they have composed many songs promoting animal rights, including Espiral de Silencio (Spiral of Silence), San Fermín and Ojos de Perro (Dog's Eyes).
According to polls by their fan club Regimiento de Pecadores (Sinners Regiment), their most famous song is "Hacelo por Mí" (Do it for me) and their best lyrics are in the song Donde las águilas se Atreven (Where the eagles dare) from which the fan club gets its name.