1st version: Maria Callas, soprano ; Fiorenza Cossotto, mezzo-soprano ; Irene Companeez, contralto ; Pier Miranda Ferraro, tenor ; Piero Cappuccilli, baritone ; Ivo Vinco, bass ; other soloists ; Chorus and Orchestra of La Scala Opera House, Milan ; Antonino Votto, conductor
2nd version: Violetta Urmana, Luciana d'Intino, Elisabetta Fiorillo, mezzo-sopranos ; Placido Domingo, tenor ; Lado Ataneli, baritone ; Roberto Scandiuzzi, bass ; other soloists ; Bavarian Radio Chorus ; Munich Children's Chorus ; Munich Radio Orchestra ; Marcello Viotti, conductor
Based on: Angelo, tyran de Padoue / Victor Hugo.
Opera in 4 acts.
Previously released as compact discs.
Previously released in 1960 ; digitally remastered 1997.
1st version: Recorded Sept. 4-11, 1959, Milan.
2nd version: Recorded in Studio 1, Bavarian Radio, Munich, July and August, 2002.