Normal blow and draw notes, blow and draw bends, overblows and overdraws - a physical point of view brings order into this diversity. The essay Frequencies
explains this idea and can be found here
What makes blues harp reeds oscillate?
Why do blues harp reeds oscillate? The answer to this question is not as simple as you might expect, as the air-flow of the player's breath is always one-way. Imagine a child on a swing, with the wind steadily blowing from behind. If the child is inactive, an initial rocking motion will die down. Eventually the wind from the back will just have the effect that the swing with the child sitting on it will be slightly inclined. So why do blues harp reeds oscillate? Current note:
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