Harmonica vibrato?

Question:I know the ha ha hu hu etc. and sing vibrato but cant find the sound shape to convey to harmonica. I can do mouth and throat but cant get the belly vibrato???
Any ideas.

Best Answer - Chosen by Asker: I know the ha ha hu hu etc. and sing vibrato but cant find the sound shape to convey to harmonica. I can do mouth and throat but cant get the belly vibrato???
Any ideas.

Most people do it with their hands. I'm not aware of any other kind for the harmonica.