Her work has received national acclaim. Her "post-tonal" musical language from acoustics, innovations in technology, harmonic resonance, and poetic allusion. Naturally unfolding through linked strands of association, timbral fluctuation, and cyclic temporal processes, her compositions synthesize old and new musical designs. As Robert Carl notes in Fanfare, "Cox writes music that demonstrates an extremely refined and imaginative sense of instrumental color and texture...This is well-wrought, imaginative, and not easily classifiable music." Her work, always engaged with novel approaches to sound and instrumental color, combines with formality "to yield great depth of meaning and a playful appeal" (NewMusicBox, American Music Center).