Coming from the tradition-rich St. Florian Boys' Choir, Alois Mühlbacher made his debut at the Vienna State Opera at the age of 15. The young countertenor can now be seen all over the world, including at the opening gala of the Vladivostok Opera House, at the Mozarteum Orchestra's New Year's Eve concert in the Salzburg Festival Hall, and in the Vienna Musikverein Hall as a soloist in major sacred vocal works by Bach and Handel. Guest performances with the Vienna Academy under Martin Haselböck have taken him to Munich, Los Angeles, Mexico, and Madrid.

Mühlbacher has been working regularly with the renowned recorder player and conductor Dorothee Oberlinger since 2021. As “Amyntas” in Telemann’s “Pastorelle en musique” he has performed at the Telemann Festival in Magdeburg, the Potsdam Sanssouci Music Festival, the Innsbruck Festival of Early Music and Musica Bayreuth. In a solo program “Grand Tour”, Oberlinger and her Ensemble 1700 have already performed together with Alois Mühlbacher at the Winter in Schwetzingen and at the Rheinvokal Festival.
In 2024, Mühlbacher made his debut with great success as “Disinganno” in Handel’s oratorio “Il trionfo del Tempo e del Disinganno” at the opening concert of the Early Music Festival in Knechtsteden and in Sicily.

Under the direction of Alfredo Bernardini, he was heard as the title character “Assalonne” in the oratorio of the same name by Caldara in Salzburg. At the Landestheater Linz, Mühlbacher was seen as Ismael in the world premiere of Gisle Kverndokk’s “Fanny and Alexander” based on the film of the same name by Ingmar Bergman, and at the Musiktheater Linz as “Eustazio” in Georg Friedrich Handel’s “Rinaldo”.

The highlights of 2023 included his debut at the Künstlerhaus in Munich, a Farinelli recital at the Festival de Sintra in Portugal, Bach cantatas with the Vienna Academy at the Vienna Musikverein and, above all, a European tour to Paris, Bordeaux, Madrid, Hamburg and Valencia with Handel's Alcina with Les Musiciens du Louvre under Marc Minkowski; in this opera he also made his debut at La Scala in Milan in 2024. Alongside violinist Dimitris Karakantas, Mühlbacher made his debut in 2024 with a Vivaldi recital at the opera house in Vilnius/Lithuania.

He has worked intensively with the ensemble Ars Antiqua Austria and Gunar Letzbor for many years, with concerts at the Utrecht Early Music Festival and the Resonanzen in the Vienna Konzerthaus, among others. Their new CD with cantatas by Antonio Bononcini was released in 2024. As a lieder singer, he surprises with an unusually broad repertoire for his vocal range and, with his piano partner Franz Farnberger, presented the highly acclaimed recording Urlicht with songs by Mahler and Strauss. The CD was nominated in three categories for the Opus Klassik 2023. In the summer of 2023, Franz Farnberger and Alois Mühlbacher founded the ensemble PALLIDOR, a specialist ensemble for early music.
He studied acting in Linz and solo singing at the Music and Arts University of Vienna with Uta Schwabe and at the Royal Academy of Music in London with Michael Chance.
He was a Sima scholarship holder and completed all studies with distinction.
In 2024 he took over the artistic direction of the Baroque Festival St. Pölten. Alois Mühlbacher lives in Vienna. (October 2024)