I've heard this on the radio a few times. It sounds like Monks or Priest signing or praying through the song, not sure if it has any actual lyrics. Has a nice beat to the song.
Need more details. That type of music (chant) is very popular and there are dozens, perhaps hundreds, of songs out there which meet your description. Is the entire song chant type, partial song, if it's partial is the remainder, male, female, etc?
It sounds like male monks singing, not all the way through though. It's like you'll hear them for maybe 15 seconds and not again for maybe 30 seconds. It's not a very long song, I think it's new as in out over the past couple of years maybe. I've never heard it before only a few weeks ago. It was on a station that plays a wide variety of music.
Have no idea. If you don't receive a satisfactory response in a time ok with you, contact the radio station; they almost always are willing to help. Since they probably don't play a lot of that style of music, I bet they can answer your question rather quickly. Good luck.