I Think It Is Most Important For

Control Of Vibrato Helps Your Musical Expression.

You Cannot Prepare Enough For Anything.

I Think It Is Most Important For A Teacher To Play The Pieces And Studies That Are Being Played By The Student.

Yes Indeed I Have Gained A Lot Out Of Playing Scales And Etudes.

Never Just Run Through A Study Because You Happen To Be Familiar With It, But Use It To See What You Can Get From It On This New Day Which Has Been Granted You.