Volkan Akkoç (born January 1983) is a choral director, composer and teacher. He is the Choral Director of Istanbul State Opera and Ballet, also conducting Cemal Resit Rey and Avrasya Philharmonic Choirs.

After his graduation from Department of Piano from Istanbul University State Conservatory (IUDK) in 2007, he earned BA in History in MSGSU, MA in Music Theory from ITU center for Advanced Studies in Music (MIAM), MA in Composition and Conducting from (IUDK). He is currently continuing his doctoral studies. He attended Master Classes of prominent choral directors such as Volker Hempfling, Denes Szabo, Frieder Bernius, Georg Grün and Ragnar Rasmussen.

Volkan is the Founder and Choral Director of "Sirene" female choir since 2014. Sirene received many awards including "Outstanding Performance of Contemporary Choral Music" performing his composition "Bedava" in 10th International Johannes Brahms Competition in which he was also awarded "Conductor Prize". He was awarded the "First Prize" in Polyphonic Choral works Composition Competition organized by the Ministry of Culture in 2018. He won the "Third Prize" in the same competition in 2019.

He taught choral music, harmony, jazz theory and harmony in IUDK and continues to teach choral music in MSGSU. Currently he is the choral conductor of İstanbul State Opera and Ballet and musical director of Musical Theater "Amadeus". He also acts as the conductor of Cemal Reşit Rey Choir and Eurasian Philharmonic Choir.

Marleen De Boo (Antwerp-Belgium) obtained both an MA in Music Pedagogy and in Choral Conducting.
She lectures choral conducting at the Royal Conservatory of Antwerp and is conductor of the Great Choir at that same institute.
At the Podiumacademie Lier she teaches choral conducting in courses for amateurs, but also for semi-professionals and professionals. One of these programs focuses on working with children and youth.
Marleen is artistic director of VZW Waelrantkoren, a non-pro t organization with eight choirs, ve of them conducted by her.
Her conducting practice covers various age groups with a strong emphasis on the pedagogical aspects of choral singing. Her main motivation is to allow amateurs, especially children and young people, to discover the beauty of choral music. She strives for her choirs to be a gentle environment for young people searching for their identity, a place where everyone can show their true self.
With Waelrant Youth Choir, she participates in international festivals and competitions. This choir currently holds the 15th place in the Interkultur World Ranking.

Thomas Kreiling started with choir singing and playing organ at primary school and was member of the school choir. He finished his pipe-organ education at the age of 16 with B-license (professional) and studied music in Frankfurt, Regensburg, Vienna and Warsaw with main focus on conducting and composing for choirs. The PhD graduation (topic: contemporary vocal music) was in 2005/2006.

2005, Kreiling has founded the mixed choir Chorona Buseck and he is still the conductor of the group. The choir has developed to an international award-winning choir and is the gold-medal and grand-prix winner in Barcelona (2014), gold-medal winner in Prague (2016), further it won several national prices and awards. Kreiling was honorary head of conductors and artistic director of the regional choir federation (2009-2015) and works on regular bases for the Dr. Hochs Conservatory in Frankfurt as guest lecturer and clinician.

His expertise was also appreciated by invitation of Assumption University Bangkok (2014/2017) by Dean Prof. Dr. Nathara Mhunpiew, University of Santo Tomas, Manila (2016/2018) by Prof. Fidel G. Calalang jr, University Shah-Alam Kuala Lumpur, Malaysia (2017) by Dean Prof. Dr. Ramona Mohd Tahir, NAFA School of Music, Singapore (2017) by Dean Prof. Lim Yau and San Francisco Gay Men Choir, California (2017) by Dr. Timothy Seelig.

He regularly lectured workshops at HAMU Charles University in Prague and was hired as detractor and juror at national and international choir competitions.

• Honored Cultural Worker of Ukraine (2009)
• Chief Choirmaster of Kyiv Municipal Academic Opera and Ballet Theatre for Children and Youth
• Member of Mykola Leontovych All-Ukrainian Choir Society of the National Music Union
• Member of National Union of Theatre Artists of Ukraine
• Choirmaster–Director of International Projects
• Expert of the Theatre Award "Kyiv Pectoral"

Born in Igualada (Barcelona), Daniel Mestre is one of the leading young Catalan conductors who works regulary with some of the most important choirs and orchestras of his country. He studied at the prestigious Escolania de Montserrat, the Barcelona Conservatory and he got his Degree on Conducting with distinction at the Vienna Conservatory.

He has been Chorus Master at Cape Town Opera (South Africa), Assistant Conductor at the Cor de Cambra del Palau de la Música Catalana and at the Gran Teatre del Liceu, conductor of the Coro de la Orquesta Ciudad de Granada and the Coral Càrmina and he teaches at the Liceu Conservatory and Catalonia College of Music (ESMUC), where he conducts their Opera Atelier, Chamber Choir and Orchestra. He has been invited at international festivals like the Europa Cantat Festival in Pécs (H) and Torino (I) or in Argentina and China. He has recorded several CDs and for the Austrian, South African, Spanish and Catalan Broadcasting.

• Choir conductor, vocal teacher, music minister, music and church music educator, choir coach for many choirs in Indonesia, national and international adjudicator
• Founder and director of "Wakhu Bhim Choir" of Papua, Indonesia
• Pioneer of choir movement in Papua, Indonesia
• Provincial Committee Member of the Foundation for the Development of Choral Music in Indonesia
• Member of the INTERKULTUR World Choir Council

Ints Teterovskis has been the Artistic Director of the award-winning Latvian youth choir BALSIS since 1998 and has been a Principal Conductor of the Latvian National Song Celebrations since 2008. He is also the Principal Regional Conductor for over 20 choirs in Latvia. As a conductor, he has recorded twelve CDs to date.

In particular Ints is recognised for his interpretation of the musical repertoire of Baltic composers. His imaginative and passionate approach to teaching choral technique and interpretation has him increasingly in demand as a choral workshop clinician, guest conductor and adjudicator in Latvia and abroad. Ints has led choral workshops in America (2000, 2003, 2007, 2009, 2012, 2014), Canada (2010, 2011), Sweden (2013), Australia (2009, 2011, 2013, 2014, 2015, 2017, 2020), China (2015, 2016) and has coached students attending the International Masterclasses for Young Musicians project in Latvia. Ints is well known as a creative and inspirational conductor who is always seeking to find new ways to bring choirs and audiences together and to introduce choral singing to as wide an audience as possible. In recent years this includes virtual choral concerts (2020), light and sound performances (Glass’ "Sounds of Liquid Days", 2020), and vocalised photo performances (2021) as well as working on new recordings with youth choir Balsis. In addition to an active conducting career, Ints, a gifted baritone, also performs as a soloist. He is also closely involved in many music festivals and mega concerts (the Ancient Music Festival, the Great Music Award, Youth Choir Song Celebration concerts etc.).