I’ve added the outer octaves to my free printable key guides, so now you can cover four octaves. These should fit any piano or keyboard with standard sized keys.
Make sure you line them up with the black keys (in groups of twos and threes) and make sure the third overlay starts with Middle C. On a piano, Middle C is approximately in the middle – obvious, I suppose!
On a 5 octave (61 key) electronic keyboard, Middle C is more to the left of centre and the first guide will line up with the lowest key on the keyboard.
and then trim the guides to size.
What do you think? Are these going to be useful to you? Can you suggest any improvements? Please comment below so that I can keep updating and improving these resources. Or if your prefer, you can Contact Me directly.