I am so happy to discover Vincenzo Altieri – a little-known Italian artist, he masterfully layers his own voice to create fantastic music between sound poetry and musique concrete. He calls it “voxfonica”:
Another part of his work is “film muti voxfonici” where he uses his voice to add new ‘soundtracks’ to classic silent films (Nosferatu, Faust, Metropolis, etc.):
https://www.vincenzoaltieri.net/voxfonie/film-muti-voxfonici