We performed a piece with these overtones in highschool in 1999. Piece is called Past Life Melodies. St. Olaf Choir perfromed it in 1997: https://music.apple.co

We performed a piece with these overtones in highschool in 1999. Piece is called Past Life Melodies. St. Olaf Choir perfromed it in 1997: https://music.apple.com/de/album/advance-australia-fair/1567668420?l=en https://music.apple.com/de/album/advance-australia-fair/1567... Edit: The overtones come later in the piece during solo parts. What you hear early on in the piece are not overtones.