found: Cage, J. Works for piano & prepared piano [SR] p1986:label (Jay Clayton, voice) insert, p. 10 (jazz and new music singer)
found: New Grove dict. of jazz, WWW site, July 15, 2003(Clayton, Jay (Colantone, Judith; b. Oct. 28, 1941, Youngstown, OH; American singer)
notfound: New Grove dict. of jazz;Carr, I. Jazz, the essential companion;Feather, L. Encycl. of jazz in the 70s;Jacobs, A. The Penguin dict. of musical performers;New Grove dict. of American music;Int'l ww in music, 7th-12th ed.;Dict. des interprètes;Penguin encycl. of popular music;WW in jazz;WW in American music, 1st ed.