Erik Sohn (Cologne) grew up in Friedrichshafen on Lake Constance and studied music and German language and literature in Cologne. After his state examination, he studied singing in Dortmund. In addition to his work as a classical concert singer, Erik Sohn is in demand in popular vocal music as a coach for vocal ensembles, a cappella bands and choirs. He is a professor of choral and ensemble conducting for popular music at the Cologne University of Music and Dance. There he directs the "Vocal Journey" choir and the annual "voc.cologne" festival.

Katarina Henryson (SWE), co-founder and long-time member of The Real Group, is known for her flexible alto voice and stage presence. As a singer, artist and educator, she explores and develops a field of expression that could be described as ‘sonic performance art’. She tours extensively with cellist Svante Henryson performing cross-genre chamber music. Katarina directs the Eric Ericson International Choral Centre, the concert series ‘360°’ in Stockholm and conducts workshops for choirs and vocal groups. She also conducts two choirs in Visby on Gotland.

Panda van Proosdij (NLD) studied at the Rotterdam Dance Academy. She taught at Codarts Music Theatre in Rotterdam, worked with the Dutch Children's Choir, Youth Women's Choir and Wilma ten Wolde and developed the "Voice & Physique’" method, which promotes voice through body awareness. She gives workshops worldwide, creates "Choireography" for choirs and contributed to the success of the Aarhus Pigekor at international competitions. She has published books and e-books on her methods.

Peder Karlsson (SWE) studied classical composition, arranging, guitar and vocal group performance. He was a co-founder and long-time member of the a cappella group The Real Group, with whom he has recorded over 2000 concerts all over the world and 16 CDs. From 2011 to 2014 he directed Perpetuum Jazzile and is now the group's mentor. Since 2015 he has been teaching choral conducting at the Royal Academy of Music in Aalborg. Peder is a founding member of the European Voices Association and part of the activism network End Ecocide Sweden.

SISTAHH (Hamburg) is a women's pop choir with 28 singers. The “sisters at heart” have been enriching the choir scene in the Hanseatic city since 2017. Under the direction of “head sister” Anne, they work on four- to seven-part arrangements by artists such as Sara Bareilles, Avicii and Imagine Dragons as well as their own compositions. The strong bond between the singers is reflected in their sound. SISTAHH stands for powerful, strong-voiced and concentrated female vocal power.

JazzVocals (Berlin) is an a cappella choir with around 30 singers aged between 25 and 50, founded in 1991 in Berlin-Weißensee. Their repertoire ranges from jazz standards to folk and rock to hip-hop, supplemented by improvisation and vocal experiments. With numerous international appearances and awards under the direction of Matthias Knoche, they won a gold medal at the World Choral Cup in Calella in 2024, among others.

SISTAHH (Hamburg) is a women's pop choir with 28 singers. The “sisters at heart” have been enriching the choir scene in the Hanseatic city since 2017. Under the direction of “head sister” Anne, they work on four- to seven-part arrangements by artists such as Sara Bareilles, Avicii and Imagine Dragons as well as their own compositions. The strong bond between the singers is reflected in their sound. SISTAHH stands for powerful, strong-voiced and concentrated female vocal power.

Voice Event (Freiburg) is a youth choir founded in 1998 by Christian Geugelin with around 35 singers from over 15 regional schools. Sponsored by the city since 2019, the choir can look back on numerous successes at competitions, concert tours and festivals. Under Sebastian Oberlin's direction, Voice Event presents a diverse a cappella program, which is also available on streaming platforms. The enthusiasm and vocal diversity of the young singers make the choir a unique experience for the audience.

æmber (Cologne) stands for empowerment and combines the English meanings of amber and ember: The eight female singers perform songs with voice and body percussion, mostly written by FLINTA people. Their repertoire ranges from gentle to powerful, feminist songs, which they largely arrange themselves. They met at the Hochschule für Musik und Tanz in Cologne, where they perform regularly.

The vocal group Còig (NDL) was founded in 2018 and consists of Madeleine Bletterman (soprano), Annemarie Homan (mezzo-soprano), Mariëtte Koster (alto), Harro Verhoeven (tenor) and Mark Vermeeren (bass) — five singers with a wealth of vocal and life experience. Their a cappella repertoire includes melodious pop and jazz songs, from captivating ballads to swinging up-tempo pieces. Highlights include performances at the BALK TOPfestival, Christmas in Antwerp and a concert at the Stinger Dome in Ede.

Còig got the Tobi Hug Stipendium 2025.

Lylac (Mainz), an a cappella jazz quintet founded in 2021, combines influences from The Real Group and The King's Singers with traditional and contemporary jazz. The group, which has won several awards for its singing and compositions, draws inspiration from exchanges with international greats. Their debut album “Falling” with original compositions was released in November 2024 and presents a multi-faceted mix of spherical, lyrical, swinging and groovy sounds that lend new nuances to a cappella jazz.

Quintabulous (Bremen) is a five-part vocal ensemble founded in 2018 and dedicated to the genres of jazz and pop. Their repertoire includes soulful pieces, sophisticated arrangements and fast-paced swing numbers. The group has achieved remarkable success: in 2023 they won first prize at the German Choir Competition in the vocal ensemble/popular music category, and in 2024 they came second at the Aarhus Vocal Festival