Georg Grün ranks among the most sought-after choral conductors and choral sound specialists in the world. In 1990, he founded the KammerChor Saarbrücken and remains its artistic director today. With the ensemble he has won major international and national choir competitions, has performed at many renowned music festivals and has regularly produced CDs for Carus-Verlag and Rondeau. Between 2000 and 2012 Georg Grün was professor of choral conducting at the Musikhochschule Mannheim, with whose newly-formed Chamber Choir he also won numerous international prizes. In 2012, Georg Grün was appointed professor at the HfM University of Music Saar, and in 2013 took on the role of conductor of the Ev. Chorgemeinschaft an der Saar. Georg Grün travels extensively both in Germany and abroad as a guest conductor, adjudicator and teacher of international master classes in choral conducting. Since 2010, he has been a mentor of the Conductors' Forum of the German Music Council and since 2015, chairman of the jury at the renowned International Chamber Choir Competition Marktoberdorf. In 2016 concerts, adjudicator work, master classes and guest conducting engagements will take him, among other places, to Italy, France, Ireland, Spain and Poland.

Mauro Barbierato was born in Padova (Italy) in 1984. After his school education he studied organ and organ composition with Prof. L. Medici Turrini at the Conservatorio "C. Pollini", where he graduated with the diploma. His musical career then led him to the Conservatorio "G. Verdi" in Milan, where he studied choral conducting, musical paleography (with Prof. G. Acciai) and basso continuo (with Prof. C. Farina). At the Mannheim University of Music he completed his Bachelor's degree with both artistic and pedagogical specialization. After that he completed his studies with a master's degree and postgraduate studies in choir conducting at the University of Music in Saarbrücken with Prof. G.Grün. At the Opera School of the Mannheim University of Music he worked as musical assistant for Prof. Cosima Osthoff and as a répétiteur. In April 2012, he conducted the opera "Echt?" at the Schnawwl Theater Mannheim and in the season 2014-15 the opera "Sturm" at the National Theater Mannheim. He is currently conductor of the Children's Choir of the Saarländischer Staatstheater, of the youth choir LandesJugendChor Saar and of the cross-country choir Choeur Robert Schuman. At the University of Music in Saarbrücken he is Italian language coach for the singers since 2013 and lecturer for choral conducting since 2020. Since 2020 he is also lecturer for choral conducting at the HochsUniversity of Music in Mainz.

Duffy has served as director of choral activities at the University of Montana School of Music for the past six years where she conducts the Chamber Chorale and University Choir, teaches conducting and choral methods, and supervises student teachers. Under her direction, the UM Chamber Chorale performed at the Marktoberdorf International Chamber Choir Competition and served as the master class choir for the International Conducting Competition, Germany (2022). The chorale also performed at the 75^th Anniversary Festival of Music at the Hochschule für Musik Saar, Germany (2022), at Cadogan Hall and Southwark Cathedral in London (2022), at the Northwest Conference of the ACDA (2022) and at the Montana International Choral Festival (2023, 2019). Duffy further serves as artistic director for the UM-Missoula Community Chorus—a multi-generational, non-auditioned ensemble that includes 8^th-graders through 80-somethings. And as a specialist in Jewish choral music, Duffy has presented sessions on the subject at national and regional ACDA conferences, as well as the NCCO, the National Association for Music Education, the College Music Society and the international conference of the European Center for Jewish Music, Germany. Additionally, as an active clinician and composer, her works are published by Walton Music, ECS, Pavane Publishing and Hinshaw Music.