Watch how the idea of “talking on pitch” in her song to helps Crystal to stabilize her support and maximize her resonance in her chest voice.
When we talk, most of us innately do many things which maximize our resonance and support our sound, but somehow these things go out the window when we sing, much to the detriment of our sound. So using the tool of “talking on pitch” can help shed some of the inefficient manipulations singers employ which are not needed for a supported and resonant sound.