After taking a doctorate in Philosophy and Literature at Oviedo University, moved to London to study Musicology. In 1980 made his debut as Director with Verdi´s La Traviata in Oviedo, his hometown. From December1990 to end 1999 was General Director of the Zarzuela Theatre in Madrid, where his first production in 1982, Donizetti's Don Pasquale, was followed by many subsequent opera and zarzuela productions.
From october 2001 to august 2005 he was Artistic Director of Teatro Real in Madrid. And from January 2008 to December 2015 of Teatro Arriaga of Bilbao.
Sagi's stage experience covers styles ranging from Baroque Zarzuela to Modern Opera, having directed as a host of leading national and international theatres and festivals: Communale in Bologna, La Fenice in Venice, Teatro alla Scala in Milan, Teatro Comunale in Florence, Teatro Carlo Felice in Genova, Sao Carlos in Lisbon, Theatre de l'Odeon and Theatre du Chatelet in Paris, Teatro ColÃ³n and Teatro Avenida in Buenos Aires, Teatro Municipal in Santiago de Chile, Los Angeles Opera, Washington Opera, San Francisco Opera, Houston Grand Opera, New Israel Opera in Tel-Aviv, VolksOper in Vienna, Deutch Oper am Rhein in Dusseldorf, Opera de Strasbourg, Opera de Bordeaux, Opera de Nice, Opera de Monte-Carlo, Opera de GenÃ¨ve, Theatre du Capitole de Toulouse, Opera de Lausanne, Royal Opera de Wallonie in LiÃ¨ge, Teatro Marynski of Saint Petesburg, Rossini Opera Festival in Pesaro, Nissei Theatre , Bunka Kaikan Â and New National Theatre in Tokyo, Hong-Kong Opera Festival, Salzburg Festival, Ravenna Festival, Teatro de la Maestranza in Sevilla, Teatro Campoamor in Oviedo, Teatro Arriaga and Palacio Euskalduna in Bilbao, Palau de les Arts in Valencia, Gran Teatre del Liceu inÂ Barcelona and Teatro RealÂ in Madrid.
Forthcoming commitments as Director will see him in Opera de Lausanne, Â Teatro ColÃ³n de Buenos Aires, San Francisco Opera, Opera de Roma, Teatro Municipal in Santiago de Chile, Â Philadelphia Opera, Â Theatre du Capitole de Toulouse, Â Teatro An Der Wien of Viena, Teatro San Carlos of Napoli, St. Gallen Opera, Rossini Opera Festival in Pesaro, Palau de les Arts of Valencia, Teatro Arriaga Â and Palacio Euskalduna in Bilbao,Â Teatro Real, teatro de la Zarzuela and Teatros del Canal in Madrid, Gran Teatre del Liceu in Barcelona and Teatro Campoamor in Oviedo.Â