Alexander Vassiliev regularly appears at some of the most renowned opera houses in Europe.

In previous seasons, he has sung in five different productions at the Nederlandse Opera, including Lady Macbeth of Mzensk, Die Frau ohne Schatten and The Cunning Little Vixen. At the Grand Théâtre de Genève, he has appeared in La bohème (Colline) and Le nozze di Figaro (Bartolo). He has previously been invited to the Mariinsky Theatre in St. Petersburg, to Düsseldorf, Essen, Munich, Bologna, Rome, Nancy, Montpellier, Paris, and London.

More recent engagements include Die Frau ohne Schatten at the Teatro alla Scala in Milan; Les Troyens in Buenos Aires; The Golden Cockerel, Der Rosenkavalier, and The Tale of Tsar Saltan at the Théâtre Royal de la Monnaie in Brussels; La bohème in Basel; From the House of the Dead in Lyon and at the Royal Opera House Covent Garden; and War and Peace at the Munich State Opera. In 2024/25 he will sing at the Teatro Real in Madrid and at the Glyndebourne Festival.

In concert, he has sung works such as Verdi's and Mozart's Requiems, Bach's St. Matthew's Passion, Janáček‘s Glagolitic Mass and Shostakovich’s 14th Symphony, in venues such as the Concertgebouw in Amsterdam, the Palau de la Musica in Barcelona, and in many other important concert halls in Germany, France, Italy and Holland.

He has worked with some notable stage directors (Pierre Audi, Robert Carsen, Richard Jones, Barrie Kosky) and with such renowned conductors as James Conlon, Kazushi Ono, Armin Jordan and Mikhail Yurovski.

His singing has featured in many recordings, including the CDs of Bizet's Ivan IV (Naïve) and Reznicek’s Tragical Story, as well as in numerous broadcasts, from principal radio stations in Germany, France, Holland and Switzerland.