The OctaHarp Selectable is now officially released. In single-harp mode the front harp plays exactly like a normal blues harp, with all the typical bending and expression. But you can instantly engage the rear low-range harp and switch to playing it as an octave harmonica. It's truly two great harps in one! Check out the video to hear it in action:
https://www.youtube.com/watch?time_cont ... wx4mrdVuhQ
More info, videos and ordering here:
http://www.brendan-power.com/harmonicas ... selectable