When people talk about different techniques I often find there is a bit of confusion when people don’t agree on definitions. The part where I hear and read this most often is regarding harmonica tremolo and vibrato. In this article I will give you the definitions on how I think about these techniques.
Harmonica tremolo definition
The tremolo effect means that the volume goes up and down periodically. You can do this either with your breath or by cupping and opening your hands. This can be used either on single notes, dirty notes or chords. Sometimes people call shaking their head and going between holes tremolo but I prefer to call that a shake to separate it from a “proper” harmonica tremolo. The shake can of course be done with a tremolo but they are not the same thing.
A vibrato on the other hand changes the pitch of the note(s) rather than the volume. However sometimes people think they are continously changing the pitch when in fact they are changing the volume. This is where some of the confusion arise. As with the shake the vibrato can be combined with a tremolo.
Making it more complicated
Actually, the shake technique where you moreve between two notes or between dirty notes belong in the vibrato group rather than the tremolo group since the frequency content changes. Some people may also argue that the a harmonica tremolo done by hand technique changes the frequency content of what you hear and then it could be placed in the vibrato category. All in all Iike to think about what my intentions are and call it a harmonica tremolo if I am actively changing the volume, a vibrato if I am actively changing the pitch and a shake if I am shaking my head.
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