🇧🇬🏆🇺🇲 The Mystery of Bulgarian Voices (Grammy Award Winners) The Bulgarian State Television Female Vocal Choir is an internationally renowned World Music ensemble that blends traditional six-part a cappella repertoire with modern arrangements. It is most recognized under the recording name ''Le Mystère des Voix Bulgares''. First created as the Bulgarian State Radio and Television Female Vocal Choir in Bulgaria in 1952 by Philip Koutev, "the father of Bulgarian concert folk music," the choir