Polly's Vocal Practice Method?

[soulfadelic]

This is a rather obscure question. I know she uses Don Lawrence as a vocal coach, but I'm wondering if anyone knows what specific school of voice/techniques she employs? (i.e. bel canto...she used to work with an opera teacher, but maybe she's moved away from this since she's singing rock and this requires a different vocal placement)

[Hell and High Water]

We love obscure questions!

And I don't know, besides the exercises she was doing in the Reeling video.