Beginning with exercise, the best training program available for real results is circuit training.
The public is usually slow to catch on to new things, and it's important that musicians stick to their guns and not look for that instant gratification.
I think you have to control the materials to an extent, but it's important to let the materials have a kind of power for themselves; like the natural power of gravity, if you are painting on a wall, it makes the paint trickle and it drips; there is no reason to fight that.

