Jarosław Thiel is a graduate of the Poznań School of Talents. He studied cello at both the Academy of Music in Poznań and the Academy of Music in Łódź, Poland. Since 1997, he has been focused on historical performance. He completed his post-graduate studies in Baroque cello at the Universität der Künste in Berlin, having worked with Phoebe Carrai and Markus a Möllenbeck. Thiel has participated in master classes run by Christine Kypranides at the Dresdner Akademie für Alte Musik and has collaborated with the most important Polish ensembles specialising in early music. Thiel has been the first cellist with the Dresdner Barockorchester and a member of the Festspiel Orchester Göttingen led by Laurence Cummings since 2000. He also works with leading German ensembles, such as Cantus Cölln, Akademie für Alte Musik Berlin, and Lautten Compagney. He regularly performs as a soloist and chamber musician in connection with festivals of early music world-wide. He currently teaches Baroque cello at the Academy of Music in Poznań and the Summer Academy of Early Music in Lidzbark Warmiński, Poland. In 2006 he was appointed Artistic Director of the Wrocław Baroque Orchestra.
Agnieszka Franków-Żelazny graduated from the University of Wrocław in 2000 with a degree in biology. That year, she founded the Kameralny Chór Akademii Medycznej (Medici Cantantes Choir at the Medical University of Wrocław). In 2004, she received a diploma from the Karol Lipiński Academy of Music in Wrocław, where she studied Music Education and was awarded a diploma in 2005 from the Vocal Department. During this time, she was honoured with the first prize in the National Contest for Choir Conductors. In 2006, she completed the Postgraduate Voice Production and Training Programme at the Academy of Music in Bydgoszcz. Since June 2006, Franków-Żelazny has been the artistic director of the National Forum of Music Choir. In 2008, she was awarded a special prize for conductors from the 39th Legnica Cantat National Choir Contest. Franków-Żelazny became the head of Polish National Youth Choir, which she also founded, in 2013. She completed course work at the Academy of Culture Leaders at the Economic University of Kraków, in 2014 and was distinguished with the Gloria Artis Bronze Medal for Merit to Culture. The following January, she was named the programme director of the Choral Academy of the National Forum of Music. In 2016, Franków-Żelazny was a music curator for the year that Wrocław served as the European Capital of Culture. The album DE PROFUNDIS – Polish Psalms of the 20th and 21st Century with the NMF Choir under her direction was awarded the Fryderyk prize for the best choral, oratorio and orchestra music, 2017. She currently works as an Associate Professor at the Academy of Music in Wrocław.