 Yaltah gave many first performances of works by Erich Zeisl, George Antheil, Ernst Krenek, Frank Martin, Louis Gruenberg, Mario Castelnuovo-Tedesco and Walter Piston.She recorded for Everest, EMI, Deutsche Grammophon Gesellschaft, SPA, Music Library and EMI-World Record Club.Yaltah's tours took her from Alaska to New Zealand; from Texas to Switzerland.