No doubts that Mike Martin has done a lot, and has done it superbly. He's like a member of my family now, so often he's life-sized on the lcd screen of my living room repeating advice about my 3 Casio keyboards. I've seen the tutorials of Ralph and Funzie, but they are far from being MikeMartin-quality. It's a pity the judgement over the WK-7600. Its a good machine, but its true. I bought it second hand almost new from a dad changing to a simpler board for his son. When I started to understand what I had bought I was in awe. Actually, the WK-7600 still sells new in Chile, and not cheap compared to home keyboards, but I doubt anyone is using it as a composing tool. Me, on the other hand, is what I want to do the most, but I'm lacking the right shortcuts for busy lives aficionados that I could find for my PX-5S and my XW-P1. Long time ago I decided I was going to be a proud Casio-guy no matter what, and that's exactly what I am.