So, how is this voice-building business done?

Experience has taught me that a multi-pronged attack is the best approach. I do not, therefore, rely only on scales, or even sound-making. 

The voice is unique among musical instruments in that its structure must be established - and continually reestablished (i.e kept fit) - in addition to its being played. It is also uniquely susceptible, on a structural level, to intrusion by negative emotion. 

That accounted for, its free-function also depends, to some extent, upon the fitness and flexibility of its foundation  - that is to say, the whole body. Did you know, for example that simply locking your knees back (a very common habit) drastically interferes with vocal quality and ease? I check my students' knees as often as a driver checks their mirrors. 

After this comes the heavy-lifting; the vocal gym. This is where we do the muscle-building required to bring power and range into your sound. 

Finally come to artistic expression and performance and the successful integration of the above into the art of singing and/or speaking well. 

It is likely that, in addition to the exercises we go through, I will recommend you begin a good stretching regimen, a bit of cardio and the odd massage. I am also a great admirer of the Alexander technique. None of these are necessarily mandatory, but they are all helpful, and the needs of each student vary according to their particular condition.