polytonic singing
singing two melodies at once, while when you're not focused on the higher notes behind it it just sounds like "EEEEEEEUUUUUUUUURRRRRREEEEEEEEEEH"
"EEEEEEEUUUUUEUEUUUEUUUEUURRRRRRREEEEEEHHHHH"
"what are you doing"
"im practicing my overtone polytonic singing"
"what are you doing"
"im practicing my overtone polytonic singing"