Ralf Eisenbeiß was born in 1952 in Zeulenroda. After his secondary school examination he studied pedagogy, German philology and musical education. He received his PhD in 1979 at the Pedagogical University of Zwickau. From 1978 to 1981, he studied choir and orchestra conducting at the Franz Liszt Conservatory in Weimar.

Ralf Eisenbeiß was working as the director of the choral department at the Pedagogical University in Zwickau and appointed professor for choir conducting and choral singing in 1987. He was conductor of the renowned Pedagogical University Zwickau Choir. With his choir he performed a wide repertoire of compositions for a cappella choirs and with orchestra, too. Under his direction the choir won numerous prizes at national and international choir competitions.

Ralf Eisenbeiß was lecturer at the central seminar for choral conductors in Berlin and organized numerous workshops himself. He often appears as guest conductor at home and abroad. Since almost 30 years he works as artistic director of INTERKULTUR. Ralf Eisenbeiß is founder of the Int. Robert Schumann Choir Competition in Zwickau and one of the founders of the World Choir Games. Since 1992 he was responsible for more than 150 international competitions of INTERKULTUR in Germany, Italy, Korea, Indonesia, China, Austria, Spain, USA and other countries. Ralf Eisenbeiß is very often invited as a juror in national and other international choir competitions all over the world.

Giovanni Acciai was born in 1946, is a renowned Italian composer, university professor, juror, workshop leader and conductor. He studied organ, composition, and choir conducting at the Conservatory “Giuseppe Verdi” in Milan, and took his master degree in musicology at Pavia University. Giovanni Acciai was conductor of the Chamber choir of the Italian Brodcast and of the Symphonic Choir of the Italian Broadcast in Turin.

Presently, he is the conductor and artistic director of the vocal and instrumental ensembles “I Solisti del Madrigale”, and the collegium vocale “Nova ars cantandi”, with which he has made concert tours and recordings; he has published several articles and reviews on early music, musicological essays, as well as recordings of unreleased works for the publishers Antes, Stradivarius, Sarx, Unda maris Archiv Deutsches Grammophon and Tactus.

His latest CD production with Nova Ars Cantandi, the "Armonici entusiasmi di Davide" by Giovanni Battista Bassani, has been nominated for the International Classic Music Award as the best CD of the year 2017 in the category Early Music.

He teaches musical history and early music semiography at the Conservatory “Giuseppe Verdi” in Milan, moreover he is the artistic director of the International choir competitions of Grado and Quartiano. He is regularly invited as an international jury member and jury president in most renewed choir competitions; he is sought after as a lecturer at conferences of musicology and asked to hold masterclasses for choral conducting in Italy and abroad.

For his high-ranking international artistical achievements in 1991, he was appointed honorary member of the American Choral Directors Associations (ACDA). Giovanni Acciai was a member in the panel of the International juries at the Choir Olympics as well as the World Choir Games and since 2004 he is an active member and official representative for Italy in the international World Choir Council.

Since 2014, he is artistic director of the Accademia di Musica Antica of Milan and active member of the Réseau Européen de Musique Ancienne” (REMA) of Versailles.

Described as "an important new voice" by The American Organist Magazine, Antognini's choral works have won many awards in national and international choral composition events and are performed in more than 55 countries. In March of 2016, a concert dedicated entirely to his choral music was held in Lincoln Centre for the Performing Arts in New York City. In May of 2016, his first major extended work, "A Prayer for Mother Earth", for mixed choir, children's choir, orchestra, soprano soloist and piano was premiered in Carnegie Hall. Recent recordings with Antognini's music include Canticum Novum, a portait album featuring the Salt Lake Vocal Artists, To Bethlehem (RESONUS), with the Kantorei of Kansas City, Invisible Stars (SIGNUM RECORDS), with UCD Choral Scholars, and Sacred Songs of Life & Love (PENTATONE) with South Dakota Chorale. His choral pieces are published by Alliance Music Pub., Walton Music, Hal Leonard, G. Schirmer, Colla Voce, Boosey & Hawkes, PH Publishers, ECS Publishing, Carus-Verlag, Edition Peters Ferrimontana, and others. Antognini teaches ear training and piano at the Conservatorio della Svizzera Italiana in Lugano, Switzerland.

Eva Holm Foosnæs is a Norwegian conductor, composer and freelance-pianist. She is educated from NTNU University of Trondheim, Conservatorio di Musica di Perugia, and Robert Schumann Hochschule für Musik.
She is the artistic director of the unique consept Opera di Setra, Tylldalspelet, choirmaster of Opera Trøndelag and she conducts the awarded chamber choir ʺKammerkoret Aurumʺ which specializes in Scandinavian contemporary music. This choir has achieved 7 gold medals in high-level competitions in 3 years along with 2 special prizes for the best perfomance of contemporary music.
As composer, Eva is focused on the human voice, and she is very occupied with musical theatre and opera.
Eva and Kammerkoret Aurum hold the title ʺBest choir of Norwayʺ in 2024/2025.

Franco Radicchia holds university degrees in different musical subjects: He passed choir conducting at the Conservatory of Perugia with distinction, completed the Master exam in Musicology at the University of Perugia and achieved the DAS (diploma in Gregorian Musicology) at the Conservatory of Lugano. He received further training by important European choir and orchestra conductors and participated in workshops at the New England Conservatory in Boston. He is the founder and conductor of the female vocal ensemble "Armoniosoincanto" with whom he intensively takes part in international concert activities and rehearses early music such as "L’Ufficio Ritmico di P. Giuliano da Spira" together with "Sagra Musicale Umbra", medieval pilgrim songs such as "O Roma Nobilis", edited by "Bongiovanni", and "Ave Donna Santissim"a, edited by "Tactus"(Bologna). Together with the ensembles Armoniosoincanto and Coro Giovanile Vivae Vocis Concentus Perugia he has achieved numerous national and international awards. Franco Radicchia is a member of the committee of the Italian section of the International Association for Studies of Gregorian Chant and is often booked for seminars and further trainings regarding early music and Gregorian musicology. Furthermore he is also working at the grass-roots level: As a teacher for music theory, music analysis and composition at the School of Music Perugia and as a conductor of several youth choirs such as the choir of the Mariotti Secondary School, the Coro di Voci Bianche del Conservatorio di Perugia and the Coro Giovanile Umbro.