Artists use extended vocal techniques such as throat singing, multiphonics (producing two notes at once), glottal clicks, and extreme registers.
If you are looking for musical inspiration , I recommend exploring the "Free Improvisation" and "Vocal Noise" genres on platforms like Bandcamp. If you are researching subculture or performance art history , the Berlin underground scene is the primary source for the "avant-garde extreme" crossover. avantgarde extreme scat
: Produce more than one pitch at once by manipulating the throat and mouth. Artists use extended vocal techniques such as throat