The EP "Guerrilha Sonora", launched by Optimus Discos, is a four song release with the collaboration of Carlos Nobre, of one the great names in the Portuguese contemporaneous music scene. The ex lead singer of the Da Weasel band writes and sings the lyrics of the main song "Guerrilha Sonora", the same song that gives name to the EP. The song "Skill ao Kilo" is a collaboration with a young talented MC from Bragança, Portugal. B-fatz writes and sings the lyrics for this song. The remaining two original Ninja Kore songs that complete this EP reflect the eclecticism that influences the actual bands choices.