From May 21 to 25, ensemble Vox Clamantis will be on concert tour in Belgium, to take part of the International Gregorian Festival of Watou. On May 23, the ensemble will give two performances – in the day and the evening concert and on May 24, Vox Clamantis will sing within the evening prayer. In the festival, Gregorian ensembles from Japan, Korea, Venezuela, USA, Germany, France, Italy, Lithuania, Netherland, Norway, Hungary, Austria and Belgium are performing.