The first is that Scott Quinn has withdrawn for personal reasons from Vec Makropulos, where he was to make his role debut as Albert Gregor. The opera opens in around three and a half weeks, so likely rehearsals are under way. Who knows what "personal reasons" means, in this case?
Charles Workman will sing Gregor instead. Workman is American, but he is active primarily in Europe and has a most interesting repertory, according to Operabase. He has sung roles ranging from Tito in Clemenza to Nobile in Thomas Adès's The Exterminating Angel, which was staged for the first time just a few weeks ago. Here's what the press release says about him:
American artist Charles Workman is a versatile artist whose early career saw him in the forefront of Rossini and Mozart tenors while also being highly-regarded in early music, French repertory and 20th-century and contemporary music. Following initial debuts at the Metropolitan Opera, Workman moved to Europe in 1995 where he has performed to great success with the leading opera companies and orchestras including the Paris Opéra, London’s Royal Opera, Milan’s La Scala, Moscow’s Bolshoi, Madrid’s Teatro Real, Deutsche Oper Berlin, and the companies of Geneva, Zurich, Lyon, Munich and Prague. Upcoming engagements include The Drum Major in Wozzeck for Geneva; Nobile in Thomas Adès’ The Exterminating Angel for the Royal Opera, Covent Garden; Edmund in Lear for Salzburg Festival and various roles in Honegger’s Jeanne d’Arc au bûcher in Madrid.Welcome to San Francisco, Mr. Workman!
Meanwhile, later in the season, Maxim Aksenov has withdrawn from the role of Pinkerton in Madama Butterfly, and this is the eyebrow-raiser, because Mr. Aksenov withdrew from June's run of Carmen performances "for personal reasons" as well. Any number of things could be going on here, including family issues, or an ongoing illness that the singer prefers not to disclose (and if so, he is completely entitled to privacy). In any event, one wishes him well.
He'll be replaced by Vincenzo Costanzo, about whom the press release says:
In November and December, tenor Vincenzo Costanzo will sing the role of Lt. B. F. Pinkerton in Madama Butterfly. A native of Naples, Italy, Costanzo has had a fast rising international career and has worked with such distinguished conductors and directors as Daniel Oren, Myung-whun Chung, Franco Zeffirelli and Liliana Cavani. He recently performed to great success the role of Pinkerton in Milan with La Verdi Orchestra, Florence, Piacenza and Venice; Verdi’s Macbeth at the Dutch National Opera in Amsterdam; the role of Rodolfo in Luisa Miller at Madrid’s Teatro Real; Nabucco at the Reggia di Caserta; and also sang Alfredo in La Traviata at the AIDS Gala at Deutsche Oper Berlin. Costanzo’s future engagements include Verdi’s Un Ballo in Maschera in Piacenza and Modena; Madama Butterfly in Madrid and Venice; La Rondine in Berlin; Macbeth in Palermo; Simon Boccanegra in Liège and La Bohème in Salzburg.He's making his SFO and United States opera debut. Welcome!