2 March 1932. Ander Arzelus and Joseba Zubimendi performed the first Basque radio program at the Unión Radio de Donostia-San Sebastián radio station. The father took his daughter and the eight-year-old girl started commenting monologues, plays and speeches written by her father. He committed to Euskera throughout his life.

Besides a radio announcer, he has also participated in the theater with the theater group Poxpolina. He was a member of the Euskaraz association, and at the time of Elvira Zipitria he worked as a teacher in San Sebastian. He also dedicated himself to teaching Euskera to adults, helped by the method of teaching Euskera created by his father.