Ariella Vaccarino
I bought several Ariella's CD online. I practice often along with the other CDs I bought and watch videos from those I trust. It's a journey but I've traveled a very long time thus far.
The one thing that I love from Ariella is the chromatic scales exercises. It helps so much to know my chromatic scales. Along with the Tune!It app that keep my pitch in check, practicing the chromatic scale in pitch is VERY important.