Brit-To ne Müllertz studied at The Royal Danish Academy, graduating with a diploma in performance in 2005. Further studies with Tonny Landy and Eva Johansson.
Future engagements until 2020 include Sieglinde/Gutrune, Ring an einem Abend in Gasteig, München with maestro Kirill Karabits, Ortlinde/Die Walküre at Semperoper Dresden, Brünnhilde/Siegfried at Theater Chemnitz and Ariadne/Ariadne auf Naxos and Elisabeth/Tannhäuser at Meininger Staatstheater. She will also make her debut at Bayrreuther Festspiele in 2020.
Recent engagements include Ortlinde/Die Walküre with maestro Christian Thielemann at the Osterfestspiele in Salzburg and in Beijing, Venus and Elisabeth in Tannhäuser at Theater Chemnitz, debut at Oper Köln with Elisabeth/Tannhäuser and Sieglinde/Die Walküre at Maifestspiele in Wiesbaden alongside Andreas Schager as Siegmund.
In 2016 she made her debut as Senta/Der fliegende Holländer at Opera på Skäret in Sweden, Wesendonck-lieder with David Riddell and Randers Kammerorkester in Tivoli Concerthall, Denmark and at the St. Magnus International Festival, Orkney, Scotland, Gerhilde/Die Walküre with Odense Symphony Orchestra and Alexander Vedernikov and Strauß' Vier Letzte Lieder in Goldener Saal in Musikverein Wien with the Bruckner Orchester and maestro Dennis Russel Davies.
At the Copenhagen Opera Festival 2015 she sang a very succesfull Wagner Galla Concert (live transmitted in Danish television) together with Torsten Kerl, James Johnsson singing a. o. Sieglinde (1. Act).
2013-2015 she was part of the
ensemble at Landestheater Linz, where she a.o. was part of the Ring in
Linz in the new build operahouse singing Freia/Rheingold, Sieglinde/Die Walküre and Dritte Norn and Gutrune in Götterdämmerung.
After her debut of Sieglinde/Die Walküre in Linz, she received great reviews and a nomination in ‘Opernwelt Jahresbuch’ as best young singer in 2014. She also sang 1. Dame/Die Zauberflöte, Rosalinde/Die Fledermaus and the titelrole of Tosca.
From 2008-2013 she was touring with Musikteatret Undergrunden in Denmark.
In 2009 she was awarded with The Danish Wagner Societies Bayreuth Stipendium.
She has worked with conductors like Dennis Russel-Davies, Franz Welser- Möst, Axel Kober, Jonathan Darlington, Gregor Bühl, Michael Bojesen, Shao-Chia Lü, Daniel Linton-France, Takeshi Moriushi, Michael Balke, Jaroslav Kyzlink and Alexander Vedernikov.