Since then, she has regularly guested at major opera houses and festivals worldwide, such as the Metropolitan Opera, Lyric Opera in Chicago, La Scala in Milan, Rome Opera, Royal Opera House Covent Garden, Paris Opera, Vienna State Opera, Bavarian State Opera, Berlin State Opera, Hamburg State Opera, Bolshoi Theatre, Mariinsky Theatre, Gran Teatro del Liceu in Barcelona, Teatro Real Madrid, and  the Bayreuth Festival. 

The 2024/25 season sees Gubanova in new productions of Das Rheingold at the Bavarian State Opera in Munich, where she takes on the role of Fricka under the direction of Vladimir Jurowski, and Rusalka (Foreign Princess) at the Teatro di San Carlo in Naples. She returns to the Paris Opera for Don Carlos and to the Vienna State Opera for a new production of Tannhäuser. Her season ends with several concerts in the US, where she will appear with the Los Angeles Philharmonic, Chicago Symphony Orchestra, and Houston Symphony Orchestra. Further concert engagements take her to Naples with Mahler’s Kindertotenlieder, the Vienna Symphony Orchestra with Beethoven’s Ninth Symphony, and Valencia with Mahler’s Rückert-Lieder. 

One of her most important roles is Brangäne (Tristan und Isolde), which she first sang with outstanding success at the Paris Opera in 2005. She also became known for her interpretation of Fricka in Das Rheingold and Die Walküre, which she performed with Daniel Barenboim at the Berlin State Opera and with Kirill Petrenko at the Teatro alla Scala and the Bavarian State Opera. A production conducted by Valery Gergiev was recorded for the Mariinsky label. 

In the past two seasons, she made her highly acclaimed debuts as Kundry (Parsifal) at the Vienna State Opera and Santuzza (Cavalleria rusticana) at the Greek National Opera in Athens. Her vast operatic repertoire also includes roles such as Eboli (Don Carlos), Amneris (Aida), Adalgisa (Norma), Giovanna Seymour (Anna Bolena), Marina Mniszech (Boris Godunov), Lyubasha (The Tsar’s Bride), Marguerite (La damnation de Faust), Mère Marie (Dialogues des Carmélites), Venus (Tannhäuser), and Ortrud (Lohengrin). 

A sought-after concert singer, Ekaterina Gubanova works regularly with renowned orchestras and conductors such as Esa-Pekka Salonen, Sir Simon Rattle, Zubin Mehta, Myung-Whun Chung, Semyon Bychkov, and Kent Nagano. She is frequently engaged for Verdi’s Messa da requiem, which she has sung under the batons of Riccardo Muti, Daniel Barenboim, Zubin Mehta, Valery Gergiev, and Riccardo Chailly, among others. Her concert repertoire also includes works such as Mahler’s Das Lied von der Erde, Des Knaben Wunderhorn, Rückert-Lieder, and symphonies No. 2 and No. 3; Beethoven’s Ninth Symphony, and works by French and Russian composers.