Marina and Teresa are sisters and form the most dynamic female rock duo on the current Spanish scene. Their live shows are energetic and powerful. Marina is a guitarist and backing vocalist in Mikel Erentxun's band and Teresa is a singer and guitarist for Aiko El Grupo, as well as a drummer for Yawners. They have been defined as grunge-pop and with references coming from Sleater Kinney or Juliana Hatfield from Dover.