Why is my system the first legitimate voice building system? Because it's the first comprehensive, methodical, vocal exercise regimen that is thoroughly grounded in, and guided by, tested scientific principles of muscular development.
Any improvement in vocal quality and performance ALWAYS results from increased strength and coordination of the vocal muscles (i.e. the muscles of the larynx, pharynx, oral cavity, and soft palate). And this is exactly why current techniques in "voice coaching" (e.g. mask singing, lip fluttering, humming, breath control exercises) so often fail, and fail miserably!
They simply do not follow the correct principles of voice building. They don't build vocal muscles!!
Voice coaches sometimes "inadvertently" use aspects of an effective approach to voice building, and consequently, may produce some vocal improvement in their students. But typically, because vocal coaches are in the dark as to what the real cause of vocal improvement is, it's not uncommon for their student's progress to be inconsistent, or for it to come to a complete standstill, or, more frequently, for their students to hear their voices regress to a less attractive (nasalized) and less capable condition (vocal constriction).
The moral to the story is quite simple:
To increase the power, resonance, range, flexibility, and endurance of a student's voice - and to do so in a sustained way with maximum results - what is required is a methodical, step-by-step approach to voice building - one based on the accurate bio-mechanical principles of vocal, muscular action.