Külli Kiivet (1979) graduated from the Estonian Academy of Music and Theatre in 2006 majoring in musical education and Tallinn Georg Ots Music High School in 2001 majoring in classical singing. She works at Tallinn School of Music and Ballet, teaching voice placing and leading the Young Children`s Choir. She is the chief conductor and artistic director of the Estonian National Girls’ Choir LEELO and she`s a voice placer for the Estonian National Opera Boys Choir and prepares boys perform in operas; many of her students s have been awarded in National and International song contests. Külli Kiivet has been a conductor in Estonian Song and Dance Festivals for girl´s and female choirs and has been chosen female choir’s lead conductor at the 28th Estonian Song and Dance Festival planned in July 2025. She has been often invited to be a member of Jury at various song contests in Estonia and has been a guest conductor on County Song Festivals.

Külli Kiivet has been awarded the Estonian Choir Union Annual Awards – "Young Conductor of the Year 2009“, „Conductor of the Year 2017“, “Conductor of the Year 2022” and she is Cultural Endowment of Estonia, folk culture annual award winner in 2021.

Mary Konstantinidou was born in Thessaloniki, graduated from the State Music School of Thessaloniki in piano and choral conducting, and has continued her studies with Peter Erdei (Hungary), Dimitris Agrafiotis (Grecce) and Titner (Great Britain).

She has conducted Mixed Choir of Thessaloniki since its establishment and has led them to win one gold, two silver, and three bronze medals at international competitions of Athens, Rome and Langollen.

She has collaborated with the National Opera of Greece, Greek Festival, National Theater of Northern Greece, Opera of Thessaloniki, Athens State Orchestra, ERT National Symphony Orchestra, as well as with Thessaloniki Concert Hall, Athens Concert Hall in more than 24 opera productions and 50 oratorios and has appeared in chamber concerts in America and Canada.

She has conducted the choirs Thermaikos, North College, Anatolia Alumni, and many more. She has also conducted in Budapest, Stockholm, Salzburg, Venice, Vienna, Istanbul, Rome, Saint Petersburg, and many more cities as well.

Maria Emma Meligopoulou holds a Master Degree in Choral Conducting from Boston University CFA and a PhD in Choral Conducting and pedagogy for Children and Youth Choirs from Ionian University. She has also studied Law at Aristotle University. She teaches Choral Conducting Techniques and directs the University Choir at the University of Macedonia in Thessaloniki.

She also teaches at the master’s program of Choral Conducting at Ionian University and is professor of Choral Conducting at the New Conservatory of Thessaloniki. She has performed many choral concerts and international tours in Greece, Europe (Austria, Croatia, Czech Republic, Germany, Finland, Hungary, Italy, Netherlands, Russia, Spain, Switzerland, UK), Asia (Israel, Turkey, Singapore, China, Japan), Africa (Egypt, South Africa), USA, Canada. As Choral Director she has been several times recipient of First Prizes with her own Choir “Ss. Cyril & Methodios Choir”, among them the Moscow Sounds Festival, Interkultur Festivals, Loto Quebec Festival (Canada), etc.

She is council member of the World Choir Games, Artistic Advisor of Interkultur Festivals, and she is on demand as lecturer, guest conductor and adjudicator in international symposiums, festivals and workshops worldwide. In 1992 she founded the Ss. Cyril & Methodios Children’s and Youth Choir, the largest choral organization in Northern Greece with over 300 singers in five departments (preparatory choir, children’s choirs, mixed youth choir and chamber choir).

She is author of the textbook Introduction to the Art of Choral Praxis (2011) 3rd Edition in 2013 and the Music Editions: Choral Works for Equal Voices by Greek Composers (2014), and Christmas Choral Works for Equal Voices (2016), all of them available by Nakas - Papagregoriou Editions, Athens.

Lucien Posman is honorary professor of composition and music theory at the Royal Conservatory of the University College Ghent in Belgium. He is the founder and honorary chairman of "ComAV", the Flanders Composers Archipelago, an interest association. Posman is member of The Royal Academy of Belgium for Science and the Arts. As bass singer he was and still is member of several choirs among them "Aquarius Choir". He studied music theory, composition and singing at the conservatories of Ghent and Antwerp. His works comprise a symphony, an opera, concertos for piano and for violine, a concerto for clarinet & choir and piano, chamber music for various ensembles and a relatively large number of vocal works, mostly using texts by William Blake. As composer he is a representative of postmodernism. His work is performed and broadcasted by prominent musicians and ensembles at home and in many European countries, Brazil and Russia. A number of his works have been awarded composition prizes.

Prof. Ren studied under the supervision of the conductor and music educator Prof. Geshun Ma, and started his own career in choral arts and teaching in 1983. By adding decades of practical achievements into Chinese choral realm, with the aid of innovation, he created the distinctive choir “Peiyang Acoustics”.

Prof. Ren is regularly invited to give lectures in more than 30 provinces and cities in China and many young conductors and composers are nurtured by Prof. Ren, like Yong Mao, Yuchuan Wen, Wenhao Mou, Jinming Zhu, Can Zheng, Wei Cui.

Throughout the years, he has set up Choral Appreciation, Chorus and Conduct and other courses at the Tianjin University. Apart from that, he advocates for holding Chinese Chorus Conductor Masterclasses, the pedagogic achievements of which won the Chinese government's rewards. Prof. Ren also shouldered the responsibility successively to be the Art Director of more than 20 choirs and is guest professor at a large number of universities.

Prof. Baoping Ren is Vice Director-General of the China Choral Association and of the China higher-education academy musical education major committee, Chairman of China higher-education choral committee, Vice Director of the China Choral Association University Choral Committee, Artistic Director and Chief Conductor of Peiyang Chorus and is regularly invited as a judge for international choir competitions.