Laboratorium Pieśni is a musical group of women from Poland.
Introduction as on their bandcamp website:
Using traditional, polyphonic singing they perform songs from all over the world. They sing with a capella and also with shaman drums, shruti box, kalimba, flute, chimes, singing bowls, rattles etc., creating a new space in a traditional song, adding voice improvisations, inspired by sounds of nature, intuitive, wild and feminine.
Video Source: Laboratoriumpiesni
Artist website: http://laboratoriumpiesni.pl/en/
Artist page on Bandcamp: https://laboratoriumpiesni.bandcamp.com/