Formed in 1996, ensemble Vox Clamantis comprises a diversity of musicians – singers, composers, instrumentalists and conductors – who have a common interest in the Gregorian chant.  Next to the Gregorian chant, considered to be the foundation of all European professional music culture, Vox Clamantis often performs early polyphony and contemporary music.  Several Estonian composers have written music for the ensemble.
 
Vox Clamantis performs often in Estonia as well as abroad.  Noted should be concert tours to Finland, Norway, France, Belgium, Lebanon, Portugal, Chech Republic and Greece. Especially should be highlighted the close collaboration with Le Chœur Grégorien de Paris (the Paris Gregorian Choir) which has resulted in concerts in several European countries, but also in Morocco.  Ensemble Vox Clamantis has performed together with various internationally renowned organists like Jean Boyer, Werner Jacob, Jon Laukvik, Peter van Dijk, Gabriel Marghieri and others, and given concerts with ensemble Hortus Musicus, the Estonian Philharmonic Chamber Choir, the Tallinn Chamber Orchestra, Weekend Guitar Trio and Cyberstudio.  The Ensemble has made several CD recordings.

The ensemble's artistic director and conductor is Jaan-Eik TULVE.

Jaan-Eik Tulve was born in Tallinn (Estonia). After obtaining his diploma in choral conducting at the Tallinn Conservatory in 1991, he learned to conduct Gregorian chant at the Paris Conservatoire (CNSM), where he was awarded first prize in 1993. He then worked at the CNSM as assistant to Louis-Marie Vigne. He has also given many courses in Gregorian chant, in France, Belgium, Italy, Norway, the Faroe Islands, Lithuania, Finland and Estonia. In 1996 he took up a post teaching Gregorian chant at the National Music Academy in Estonia. In 1999 he was appointed consultant on the Gregoriana Fennica project (study of early Finnish manuscripts). He is often invited to conduct work sessions in monasteries. In his musical training - Gregorian, in particular - Jaan-Eik Tulve has learned a great deal from his work in common with Dom Daniel Saulnier of Solesmes Abbey

In 1992 Jaan-Eik Tulve became conductor of the Paris Gregorian Choir, with which he has appeared in many European countries and also in Lebanon. Many of the recordings made with the choir have received great critical acclaim. He has also conducted the Estonian Male Voice Choir. In 1993 Jaan-Eik Tulve formed the Lac et Mel ensemble in Paris, for the performance of medieval polyphonic works. He also formed the female-voice section of the Paris Gregorian Choir in 1994. Finally, in 1996, he formed the Vox clamantis ensemble in Tallinn.