Born in Villach, Austria, employed as a teacher for Music and Italian at the Gymnasium Stockerau. Since her earliest years she sang in numerous vocal ensembles and choirs, inter alia Chorus sine Nomine, Concentus Vocalis and Ensemble PolyhymniA Alte Universität Wien. In school, she is also choir director and performs musical plays, gives concerts and assists at opera productions. Her last projects were Odysseus in 2007, in Die Zauberflöte (The Magic Flute, student coach) in 2006 and a concert in the Festspielhaus St. Pölten, Niederösterreich, in 2005. Christina Strehlow is highly interested in vocal music of the 16th century. Her thesis was about Monteverdi and Schütz madrigals. Singing in Desiderius offers her the long-cherished wish to perform early vocal music.

Born in 1979, he enjoyed lessons on the piano and organ in his early years. Since then his musical interests have become widely diversified: on the one hand, his roots in church music are deep, as his activity as choir director and conductor demonstrates; on the other, he sings as a soloist and in different choirs, often in the vocal ensemble of Vienna's Stephansdom. In addition, he dedicates his time to repertoire of the piano and organ, particularly in the genre of chamber music. Slavic music is another of his special interests.
Stefan Waler has studied business informatics and is employed as a consultant and researcher in information technology.

was born in 1969 in Sargans, Switzerland, where he also completed his education as primary school teacher and taught for five years. In 1996, he moved to Vienna and began studies in business computer science while teaching at a secondary school. He has worked as a consultant in the field of computer education (e-learning) for the past three years.
His love of music and singing in particular was awakened in his early years in a children's chorus. Later he took over the position of choir director for both children and adult choirs. He has attended courses in choir directing led by Karl Scheuber (Zürich) and Erwin Ortner (Vienna). He began voice lessons with Adelheid Krauss (St. Gallen) and continued with Matthias Toggenburger (Winterthur). Since then Alex Braun has sung many church music and lied concerts. In Vienna, Alex Braun is a member of different choirs, including Concentus Vocalis, Vocalensemble St. Stephan, and PolyhymniA Alte Universität Wien.
Alex Braun is especially fond of early church music and of Gregorian chant in particular, which he came to know well during long visits to the Cistercian monastery Abbay d'Hauterîve (near Frybourg, Switzerland).

born in Vienna in 1977. He had his first musical encounter at the cello during his years in primary school. As a soprano soloist in the Vienna Boys Choir he was able to gather more musical and artistic experiences. Since 1993 he has been a member of the Gregorian chant school of the Vienna Hofburgkapelle, which regularly restores Gregorian chant to its rightful place in the Sunday mass. As a choir singer with diverse abilities, he has sung in many different Viennese choirs, including Concentus Vocalis, PolyhymniA Alte Universität Wien, and the choir of the Neue Oper Wien. Next to his family and his studies of Wood Economics at the University for Bodenkultur (Earth Sciences) in Vienna, singing has remained an important part of his life. He discovered his love for early vocal music while searching for the connections between chant and baroque music.

born in Vienna in 1978. Being a Vienna Choir boy until 1992 he started to develop his young male voice with KS Jewgenij Nesterenko at the Konservatorium Vienna. After his studies he founded and leaded a choir for repeatet performances of Die Fledermaus at the Ronacher theatre in 1998. Nowadays he can be found in several choirs and ensembles in addition to his job in a private bank.