Here’s a quick You Tube video on the 10 hole Koch Slide Diatonic (Chromatic). This is really a neat harp and the possibilities are endless! I’ve retuned a few notes on this one. https://www.youtube.com/watch?v=2b_3pQKAUXI I also happen to have this one for sale on eBay http://www.ebay.com/itm/281122206773?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649