1.14 alto clef ============== ES: clave de do en tercera, I: chiave di contralto, F: clef dâut troisième ligne, D: Altschlüssel, Bratschenschlüssel, NL: alt sleutel, DK: altnøgle, S: altklav, FI: alttoavain. C clef setting middle C on the middle line of the staff. See also ........ C clef.