Mark van Tongeren is a Dutch sound explorer and artistic researcher with a deep interest in the synergy of arts, sciences and contemplative traditions. He feels equally at home ‘in the field’ to study and practice indigenous vocal techniques, as in cutting-edge music experimentation. He is best known for his work in the experimental voice, especially overtone singing, which he has steadily explored in many traditional, contemporary and experimental contexts for almost three decades, as a performer and ethnomusicologist. He primarily improvises using voice, overtone singing, Jew’s harps, and an array of sound objects, sometimes with electronics.