This thesis is a 'big-picture' look at the course of Western philosophy and its eventual arrival at ideas that look remarkably similar to the revelations of Guatama Buddha 2500 years ago. I look at the roots of how the West has understood itself and understood "being" through the centuries and at the revolutions in thought that took place in the 20th century. I look more closely at 20th century thinkers to demonstrate how their thinking begins to align with the ancient insights of Eastern philosophy, particularly the notions of a prevailing emptiness as "ground" of Being and of the fallacy of the individual subject. I also look at how some 20th century artists have engaged with these new ideas. I see generally two responses to the postmodern (post-subject) position: that of a play of surfaces, such as in the work of Andy Warhol and the philosophy of Jean Baudrillard; and that of an embracing of absence, presented in the philosophy of Martin Heidegger and the works of such artists as John Cage, George Brecht, Pauline Oliveros, Bill Wegman, David Hammons and others.

The registers of the singing voice, as commonly understood by singers, refer to the different vocal qualities induced by adjustments at the level of the larynx and of the vocal tract. This explains why register unification can be approached either one or a combination of the following procedures: (1) resonance alignment through vowel modification, (2) register alignment through intensity exercises. The wide-spread acceptance of vowel modification has made singers reluctant in exploring other avenues of register development. If registers are laryngeally derived, there should be another way of register unification, which directly addresses the coordination of the laryngeal muscles. In support of this argument, this thesis investigates the teaching practices of a group of twentieth-century American voice teachers, who rely on intensity manipulation as the primary means for enhancing the register adjustments. Intensity exercises such as the messa di voce has long been practiced in historical pedagogy, but it is not until now that voice science confirmed its significance in register coordination.