Judith Halasz, studied at the Vienna Conservatory with Hilda De Groote and Julia Conwell and graduated with honors in 2002.

She took masterclasses with Hilde Zadek, Walter Berry, and Patricia Wise.

Further on she studied with Helena Lazarska, Edith Lienbacher, Georgeta Stoleriu, Martin Vachá, and Carol Blaickner Mayo.

From 2001-2003 she was a member of the Vienna State Opera (singing Papagena/The Magic Flute, Woglinde/Rheingold and Götterdämmerung, Najade/Ariadne auf Naxos, Karolka/Jenufa and many others).

As a guest she also was engaged at the Leipzig Opera (Lisa/La Sonnambula), the Graz Opera House (Parsifal), the State Theater in Karlsruhe, (Parsifal), the Vienna Chamber Opera, the Municipal Theater of Baden and the Theater an der Wien.

She sang concerts and festivals in Japan, Canada, Sweden, Finland, Greek, Germany, Spain, Austria, Switzerland, Italy, Romania (Radio), Bulgaria (NDK), Poland, Egypt, Qatar, New Zealand and Australia.
In the summer 2011 she was a soloist at the „Carinthian summer“ (D.Milhaud), in summer 2012 she was the „Kurfürstin“ (Der Vogelhändler/Zeller) and „Donna Elvira“ (Don Govanni/Mozart) in 2 festivals in Austria.
CD production/Naxos: "Susanna" (Mozart/Le Nozze di Figaro) and „Serenata interrotta“ (L.Scarmolin).

In addition to concert and stage work, she also often performs sacred music in the cathedral of St. Stephan (Vienna) and works as well in a music school as a private coach for many years.

In April 2018, she will perform R.Strauß “Four last songs“ atthe Liszt academy in Budapest.