via this great audio-annotated selection of electronic / concrete music by female composers, curated by John Leidecker aka Wobbly, originally for KPFA, the Berkeley, California radio station, but archived at UbuWeb. The show is in two parts; Alice Shields is in the first one, but mouth music crops up regularly in both selections. Like this ...
Well, I think it's music of mouthly origin
And this one, which definitely is
Joan La B is also in there, but with a piece that's not on YouTube
And Ruth Anderons's "DUMP" is in there - not on YouTube but this other plunderphonic voice-collage is: