I have a question for the professor but if anyone else has an answer by all means please join in.
How do you double strings when they are not not playing an octave apart but for example a 3rd or a 6th. Let's say you have the Violins with the Violas playing a 6th below. Could you double the Violins with the Flute and the Violas with the Oboe with good results? or would it be more appropriate just doubling the violins with the flute?