Considering the rich tradition of Bulgarian vocal music, this is hilarious. I've been fan of Bulgarian choral music since I heard the state choir 25 years ago.
In contrast, listen to this version of your famous song Devoyko Mari by an American group called Kitka https://youtu.be/M1eSMDmYzDQ
The Bulgarian state choir isn't a representative of a rich tradition. Most of that music came about in the Communist era when the authorities wanted music that fit the Western norms demanded by socialist realism, but was lightly spiced with aspects of Bulgarian folk music so that it could seem "close to the people". There is a huge difference between that state-created choral genre and real Bulgarian traditional music as heard on archival recordings by ethnographers. Ethnomusicologist Timothy Rice's publications explain some of these differences.
Wow amazing! A point of pride for bulgarians is that one of our folk songs ended up on the gold record onboard Voyager 1 [1]. I knew about japanese groups singing bulgarian folk songs but this amarican one is new to me, thanks for the link.
A fun inter-cultural song is from the italian band Elio el e Storie Tese that recorded one with the choir of bulgarian national radio - “Pippero” [2]. Its sad that there aren’t many modern collaborations like that as it sounds very magical and beautiful to me.
In contrast, listen to this version of your famous song Devoyko Mari by an American group called Kitka https://youtu.be/M1eSMDmYzDQ