“The only way to overcome vocal difficulties is to free the production – the response in physical functioning of the singing instrument to the demand for tone. This free functioning of the singing instrument produces the free tone as an effect. We condition the living instrument to such a degree that it can answer, without interferences, all vocal and musical demands within the limits of individual vocal equipment. With this free production, we then work to attain the highest possible degree of vocal artistry. (It must be stressed that all functional activity of the vocal instrument is but a response to the mental demand for tone – the primitive urge to sing. WE SING: we do not try to sing in some particular way.)

from Dynamic Singing by Louis Bachner