The ensemble belongs to foremost world interpreters of medieval sacral music.
It has been focusing its work both on the semiological interpretation of Gregoriant chant according to the earliest neumatic sources from the 10 century, and on presentation of the original Bohemian plainchant tradition, including early polyphony.
In their presentation, the choir has worked with eminent international orchestras (e.g.
the Czech Philharmonic, Berliner Philharmoniker, Israel Philharmonic, St Petersburg Philharmonic, Staatskapelle Dresden or Wiener Symphoniker, among others), and conductors (including Daniel Barenboim, Jiří Bělohlávek, Christoph Eschenbach, Vladimir Fedoseyev, Manfred Honeck, Jakub Hrůša, Tomáš Netopil, Gianandrea Noseda, Philippe Jordan, Fabio Luisi, Zubin Mehta or Sir Simon Rattle).
The first of these, a recording of Antonín Dvořák´s Stabat Mater (Decca, 2017), with Jiří Bělohlávek conducting, received the prestigious Diapason d´or de l´année award for the year´s best album in the sacred music category.
Patrick Grahl attended master-classes held by Peter Schreier, Gotthold Schwarz, Gerd Türk, Ileana Cotrubaş and Prof.
Thanks to ensemble’s intensive study of medieval sources, its programmes also include a number of unique, newly discovered compositions dating from the 13 centuries.