Slovenian mezzosoprano Barbara Kozelj has firmly established herself as a charismatic and hugely versatile artist. Her voice and performances have been described as "thrillingly beautiful," "deep and powerful," "breathtaking," "deeply expressive," and "straight to the heart." Equally at home in opera, concert, and recital repertoire, her performances have brought her to leading international stages and continue to captivate audiences around the world.

Recent opera engagements include Octavian (Der Rosenkavalier) and Mélisande (Pelleas et Mélisande) with Taiwan National Symphony Orchestra and Jun Märkl in Taipei, Brangäne (Tristan und Isolde) at Leipzig Oper, Wagner22 and at Teatro de la Maestranza in Sevilla, Judith (Bluebeard’s Castle) with NJO and Antony Hermus and Penelope (Il ritorno d’Ulisse in patria) with the Academy of Ancient Music and Richard Egarr at London’s Barbican Hall.

Barbara is in great demand as a concert soloist. After her debut with the Royal Concertgebouw Orchestra and her Carnegie Hall debut her carreer has taken flight. Her recent highlights include Berg's Sieben frühe Lieder with Trondheim Symphony Orchestra and Respighi's Il Tramonto with Orquesta Sinfónica de Tenerife conducted by Antony Hermus, Canteloube's Chants d’Auvergne with Slovenian Philharmonic Orchestra and Bas Wiegers in Ljubljana and Ligeti's Requiem with Orquesta y Coro Nacionales de Espagna and David Afkham.

This season, she return to Wigmore hall for the performances of Mahler Lieder eines fahrenden Gesellen, Zemlinsky 6 Songs to Poems by Maurice Maeterlinck and Schönberg Pierrot Lunaire with Klangforum Wien and Vimbayi Kaziboni, and to perform her beloved Mahler Das Lied von der Erde with Camerata RCO (members of the Royal Concertgebouw Orchestra) later this year. Future concerts also include Winterreise with Nino Gvetadze in Amsterdam, Frauenliebe und Leben with Richard Egarr in Namur, Haydn Ariadna a Naxos with Shunske Sato and Mathew Passsion with Phion and Residentie Orchestra.

Barbara has collaborated with conductors including Iván Fischer, Jaap van Zweden, Jun Märkl, Henrik Nánási, Stefan Soltesz, Richard Egarr, Neeme Järvi, David Afkham, Paul McCreesh, Kenneth Montgomery, Reinbert de Leeuw, Bas Wiegers, Antony Hermus, Otto Tausk and with orchestras including the Royal Concertgebouw orchestra, Budapest Festival Orchestra, Academy of Ancient Music, Gabrieli Consort and Players, Athen’s State Orchestra, Orquestra Simfonica de Barcelona, Orquesta y coro nacionales de Espagna, St Luke’s orchestra, Slovenian Philharmonic, The Orchestra of the Age of Enlightenment and most of the Dutch orchestras.

Her versatility has also attracted the attention of many composers who have written works speciffically for her. She has sung world premieres of compositions written by Thomas Beijer, Jan van de Putte, Max Knigge and Oscar Bettison. She has a strong affinity with Lieder, regularly performing recitals with Julius Drake, Thomas Beijer, Phyllis Ferwerda and Nino Gvetadze.

The foundation for her musical development was established in Slovenia, where she graduated from the Academy of Music in Ljubljana. She later continued her studies and graduated from the Royal Conservatory in The Hague. She was a member of The New Opera Academy and the Dutch Opera Studio. Barbara has been coached by Marcos Bajuk, Irena Baar, Phyllis Ferwerda, Meinard Kraak, Ann Murray, Graciela Araya, Anne Sofie von Otter and continues to study with Sasja Hunnego, who has been her mentor and vocal coach throughout her carreer.