Jaroslav Brych studied French horn at the Pardubice Conservatory and conducting at the Academy of Performing Arts in Prague under Václav Neumann, Josef Veselka, and Radomil Eliška. He participated repeatedly at Helmuth Rilling’s conducting courses in Stuttgart. From 1984 to 1997 he was the choirmaster of the Charles University Choir, and from 1996 to 2005 he served as the chief choirmaster of the Prague Philharmonic Choir. Besides his activities as a conductor and choirmaster, he also teaches at the Academy of Performing Arts in Prague, the Jaroslav Ježek Conservatory in Prague, and the Pardubice Conservatory. He has been the choirmaster of the Kühn Choir of Prague since 2017.

The Kühn Choir of Prague has been active in the music world for nearly sixty years. Under the leadership of Pavel Kühn, it has focused on the performing of a cappella works of the Romantic era from around the world, and under the guidance of conductors including Václav Smetáček, Zdeněk Mácal, Jiří Bělohlávek, and Libor Pešek, it has also performed the oratorio and cantata repertoire. Among the ensemble’s other activities have been the making of recordings of music from films and operas. The choir inspired works by many composers of the latter half of the twentieth century, including Bohuslav Martinů, Jan Novák, Václav Trojan, and Luboš Fišer. It has collaborated with a number of renowned Czech and foreign orchestras and presents a series of its own concerts at the Czech Museum of Music.

Lenka Navrátilová studied piano under Prof. Jaroslav Čermák and harpsichord under Prof. Rudolf Zelenka at the Teplice Conservatoire and choral conducting of sacred music under Prof. Jiří Kolář and Prof. Marek Štryncl at Charles University. She is a professor of opera coaching at the Prague Conservatoire, and she is an accompanist and rehearsal pianist of the Prague Philharmonic Choir. She has engaged in long-term cooperation with the Prague Chamber Choir and the Czech National Symphony Orchestra Mixed Choir, and she is a choirmaster of the Kühn Choir of Prague. She has conducted concerts with the choir at the Dvořák Prague Festival, Musica Holešov, and the Saint Wenceslas Festival. As a choirmaster, she has taken part in concerts of the Czech Philharmonic, the Prague Symphony Orchestra, the Berg Orchestra, the Antonín Dvořák Music Festival in Příbram, Film Music Prague, the Prague Proms, and concerts produced and presented by Radio Classic. She has also rehearsed the choir for opera productions at the National Theatre. On programmes of the concert series of the Kühn Choir of Prague, she has given several world premieres of choral works. As the assistant choirmaster of the Prague Philharmonic Choir, she has appeared on concert tours in Doha and Berlin and at the opera festival in St. Gallen.