We have been very busy responding to your comments on the subject of improving tone quality and this makes me very pleased for all musicians should be concerned with their sound. In this the third installment on the subject of a focused sound, we will be addressing two related and equally important elements in producing an impressive sound. The first will be the size of the aperture between your lips and the second will be direction of the air stream through your instrument. 1. Aperture size and shape. How often have you thought about the size and shape of the…