What I don't understand is, who are you and why do you want to know this stuff? Its obvious that you don't play any type of harmonica, so what's the deal?? Are you developing a harmonica that can change keys on the fly? Your profile doesn't give any info about yourself whatsoever... howzabout giving a little before asking?
Ok, I realized that there were some problems with my other questions, so I revised the survey to be more applicable to harmonica players. PLEASE take the time to fill this out, I would greatly appreciate it.
1. How long have you been playing harmonica? a. Less than 1 year b. Between 1 and 3 years c. Between 3 and 5 years d. Between 5 and 10 years e. Over 10 years
2. What type of harmonica do you play/prefer? a. Chromatic b. Diatonic c. Orchestral d. Other
3. Do you have a need to play in several different keys? a. Yes b. No
4. If Yes, do you… a. Own multiple harmonicas, each for a different key? b. Own one harmonica, but change reed plates for different keys?
5. Would you be interested in one harmonica that changes key without changing reed plates? a. Yes b. No
6. How much would you pay for such a product? a. Nothing b. $ 1 - 5 c. $ 5 - 15 d. $ 15 - 25 e. $ 25 - 40 f. $ 40 +