February 8, 1941: Carol Plantamura; 1940: James Blood Ulmer 1940
Includes versions of Rzewski's Antigone-Legend which Plantamura performed at the Wall o'Rzewski that closed the 1989 NMA NYC festival.
Carol Plantamura, 1941, Los Angeles
https://en.wikipedia.org/wiki/Carol_Plantamura
Carol Plantamura has had an impressive career as a soprano, notably with the Five Centuries Ensemble, and she only had one appearance at the NMAs, but it was quite a shindig: the six hour tribute to Frederic Rzewski on the last day of the 1989 NMA festival in New York City.