Opera in 2 acts. Libretto by Felice Romani, Based on: La somnambule, ou, L'arrivée d'un nouveau seigneur / Eugène Scribe. Compact discs. Program notes in English, German and French, and libretto in Italian, German, English and French (142 p. : ill.) in container. Recorded in performance, 1955. Maria Callas, soprano ; Cesare Valetti, tenor ; Giuseppe Modesti, bass ; other soloists ; Orchestra and chorus of Teatro alla Scala, Milan ; Leonard Bernstein, conductor. Sung in Italian.