Teresa Berganza's premiere of Sexto in La clemencia de Tito was in her beloved theatre, El Colon in Buenos Aires, in 1967, and it wouldn't be until 1976 when she repeated the experience, this time at the Vienna Opera, with Arleen Auger and Edda Moser.

Her two recordings, in 1967 with the Vienna Opera and István Kertész´s direction and in 1978 with the Sajonian National Operal and directed by Karl Böhm, are both referencing the Mozart universe.

Thank that in 1976 Teresa sang the opera at the Royal Theatre in Madrid, her Spanish audience could also enjoyed her wonderful Mozart, even if it was in concert.