Choir and Orchestra of the Roman Radio. Dir. Riccardo Muti. Montserrat Caballe (Agnes of Hohenstaufen, wife of Henry of Brunswick), Giangiacomo Guelfi (Henry of Brunswick, son of Henry the Lion), Giampaolo Corradi (Philip of Hohenstaufen, brother of the king), Sesto Bruscantini (Duke of Burgundy, King of France), Walter Alberti (Henry the Lion, Duke of Saxony, representative of the Guelph dynasty), Bruno Prevedi (Emperor Henry VI), Antonietta Stella (Irmengarda, mother of Agnes, widow of Konra

Choir and Orchestra of the Florentine Musical May. Dir. Vittorio Gui. Lucille Udovich (Agnes), Dorothy Doe (Irmengarda), Franco Corelli (Henry Palatine), Francesco Albanese (Philip of Brunswick), Enzo Mascherini (Duke of Burgundy), Anselmo Colzani (Henry the Lion), Giangiacomo Guelfi (Emperor Henry VI), Arnold van Mill (Archbishop of Mainz), Giorgio Algorta (Castellan), Valiano Natali (Theobald), Valerio Meucci (herald), Lido Pettini, Raniero Rossi (1st and 2nd judge). May 6, 1954 (live)