Dr. Hyung-Tae Kim, MD, Ph.D., is an adjunct professor at the Department of Otolaryngology-Head and Neck Surgery at The Catholic University of Korea in Seoul, South Korea. Since 2003, he has been privileged to lead the Yeson Voice Center in Seoul.

A humble dedication to advancing knowledge has marked his contributions to the field of laryngology. In 1998, he introduced EMG-guided injection laryngoplasty, a significant advancement in treating voice disorders. Dr. Kim also developed the multichannel phonokinetic evaluation system to assist professional singers and pioneered the vocal fold shortening with retrodisplacement of the anterior commissure (VFSRAC) technique for gender-affirming voice surgery.

Beyond his professional roles, Dr. Kim is honored to be the founder and chairman of the Korean Foundation for Voice of Performing Arts board. He currently serves as the vice president of the esteemed Korea International Medical Association.

With a deep sense of humility, Dr. Kim actively engages in international trans-healthcare and pedagogical organizations, aiming to contribute to his field with unwavering dedication and a commitment to lifelong learning.

Prof. Dr. Philipp P. Caffier is Senior Consultant and Site Director of the Department of Audiology and Phoniatrics at Charité – Universitätsmedizin Berlin, Germany. He received his medical degree from Humboldt University Berlin, earned his doctoral degree in 2003, and obtained board certification in Otorhinolaryngology (2008) as well as in Phoniatrics and Pediatric Audiology (2013). He completed his habilitation, qualifying for independent teaching and research at professorial level, in 2011 and was appointed Adjunct Professor in 2021. Since December 2024, he has been a Clinical Fellow supported by the Charité Foundation.

His clinical and research focus includes voice diagnostics, laryngology, phonosurgery, laser applications, and performing arts medicine, supported by professional training in singing and dance. He is actively involved in medical education and interdisciplinary teaching, holding teaching appointments in voice physiology at the Hanns Eisler School of Music Berlin and the Berlin University of the Arts. Prof. Caffier has received multiple awards from the German Society of Phoniatrics and Pediatric Audiology (DGPP), among them the Innovation Award for the development of 3D videolaryngostroboscopy. He serves on national and international professional boards, including the German Association of Singing Teachers (BDG) and the European Academy of Phoniatrics (EAP). He is also a UEMS delegate and National Coordinator of the Union of European Phoniatricians (UEP). He has presented extensively at national and international conferences and authored over 40 peer-reviewed articles in international scientific journals (h-index 16).

Jörg Edgar Bohlender, MD, is an otolaryngologist and phoniatrician subspecializing in laryngology and phonosurgery. Since 2008, he continues to lead the Division of Phoniatrics and Speech Pathology at the Clinic for Otorhinolaryngology, Head and Neck Surgery, University Hospital Zurich, Switzerland. His expertise focuses on advanced phonosurgical techniques, swallowing disorders, and the clinical care of professional voice users.

Prof. Dr. Michael Fuchs

Head of Phoniatrics and Audiology, Cochlear Implant Center and Center for Musicians' Medicine at Leipzig University Hospital. Specialist in ENT and specialist in phoniatrics and pedaudiology.

Born in Leipzig in 1968. Member of the Thomanerchor Leipzig in his youth. Studied human medicine at the University of Leipzig. Private vocal studies with KS Christa Maria Ziese. Study visits to Berlin (Charité) and Vienna (AKH). Doctorate and habilitation on the development of voice in childhood and adolescence. Following an appointment to a university professorship at the University of Greifswald in 2009, he was appointed adjunct professor and awarded university teaching rights at the University of Leipzig.

Specialized care of singers and musicians with hearing and voice disorders, specialized care of the child and adolescent voice. Further clinical and research focuses: Teacher's voice, head and neck oncology, central auditory processing. Operative spectrum in phonosurgery.

Extensive national and international lectures and publications. Responsible for medical didactic training program and problem-based learning at the Leipzig Medical Faculty. Teacher for physiology of voice and hearing at the Universities of Music and Theater Leipzig and Weimar as well as at the University of Halle/Saale. Medical Headmaster of Vocational school for Logopaedics Leipzig. Founder and director of the Leipzig symposia on children's and youth voices, editor of the series "Kinder- und Jugendstimme". President of the Thomanerchor Leipzig Support Association.

Johannes Zange Award from the Northeast German Society for Otorhinolaryngology and Cervicofacial Surgery, Gerhard Kittel Medal and Karl Storz Award for Academic Teaching from the German Society for Phoniatrics and Pedaudiology, Gustav Wohlgemuth Medal from the Saxon Choir Association. Inclusion award “Bridge Building” from the Leipzig Vocational Training Center for Hearing-Speech-Communication.