Thank you all very much for your prompt and informative answers which I read with some relief.

I recently attended a Technics demonstration hosted by a local music store at which Tony Pegler was demonstrating the KN7 and he mentioned using the transpose feature. I was with two other friends who also own keyboards and we each said to each other that we had never thought to use that feature other than the obvious one to accompany/sing to.

I play strictly by reading the music and if the music changes key then I follow it so if I used the transpose feature it would be to purely, as suggested, to 'lift or enhance it.

I can now happily go off and have a go, happy in the knowledge that I have not missed some other vital point in my music education. Thank you again. Joan