I think that since chromatic harmonica have different amount of holes, then when you select chromatic you also put in the recommended amount of holes being 10, 12, 16, or others.
Actually, by convention, chrom tabs usuallly stay the same for most of the different sized harps. It's only when you get away from solo tuning that problems arise. Holes below middle C are denoted uniquely depending on the tabber, I suggested underlining, but different key strokes for different key folks. Otherwise 1 is still C, etc.
Matt, is it a Koch or a slide harp, in which case it's Richter, like the diatonic, with the sharps from the button. If its C reference it to a C diatonic. I love my slide harp.
It's a slide and I love it, especially because I can play all the sharps with it. I can play most any sheet music as long as its within a two and a half octave range
If it's a slide that means you can play virtually all the diatonic tabs on this site, and fix many of them. That one note in the song that just doesn't seem quite right can now be fixed, the only exception is -3 sometimes. You can also do a lot of chording with it. And if you're a blues guy, well, it's still a diatonic, albeit with windsavers. Good luck with it. Another plus, you can tab for it, which is something I don't do.