I'm wondering what techniques or training these people went through or use to do these types of voices?
Here's the girl voice at 0:40 (it's a guy)
then here's a guy singing a duet.
Are they using falsetto and reinforced falsetto?
I'm really interested in this voice here. I'm surprised it's a guy. What techniques does it sound like he is using? Is it a MIX, or is it pure reinforced falsetto, or other? How is he making his formants sound so much like a female? and intonation?
here is another amazing singer, what techniques is he using?