Curiosity: harmonic polif√≥nico song
You knew that it is possible to sing at the same time emitting two different notes? Harmonic the polif√≥nico song allows independently to use two lines different from voice.
The technique has to do with using the mouth to mutear some of the natural frequencies that are emitted when singing, to emit two differentiated and independent lines of voice.
In this Anna-Maria Hefele video it explains of a very visual form of what the polif√≥nico song consists harmonic:
And in this other this technique sings a brief piece using:
If it has interested to you, comp√°rtelo!