Looking for relaxing music which is probably religion/yoga related
 

Hi there! I'm looking for a music which is probably religion related. I heard it in a theatre drama, and in that scene the protagonist was doing zazen and I'm guessing it might be related to Hinduism. However, the music sounds more like medieval chants than Indian music to me.

The music consist of a background which contains long sustained notes and a male vocal who is singing the melody. I couldn't identify the background instrument, but I believe it is some sort of drone music. For the vocal part, I believe there are lyrics, but I couldn't hear what it is and believe it's not English. Both the background and the vocal are faint and quiet, giving listener sense of peace.

The melody of the music is 35356432 5686564323 4246543 4565423 5688546 4255423 43235421(8 = 1, but an octave higher) and the key is D flat majorThe rhythm is not especially obvious

Thanks for everyone's help in advance ;)