Esther Ferrer is well known for her individual performances as well as for the works she made as a member of the group ZAJ from 1967 until its dissolution in 1996. In the early 1960’ s, together with the painter José Antonio Sistiaga she created the Taller de Lliure Expressió (Free Expression Workshop) in San Sebastian and the Experimental School in Elorrio (Vizcaya). She has presented her performances in numerous festivals around the world and regularly exhibits her works in galleries and museums