Here's a question for you music theorists out there: On my chromatic harmonica (CX12), the 4 and 5 blow holes (the Cs) are slightly out of tune with each other; the 4 is a microtone higher than the 5, and the same is true an octave up on blow 8 and 9. Does this have something to do with tempering, or did somebody just get a little careless at the factory? Robin Chapman chapman@xxxxxxxx