Now that I am no longer able to sing, I just play guitar while Jacqui sings. When we are doing one that I used to do, I often have to transpose it into a higher key simply because she can not sing in my old key. If it's a simple transposition, G to A or B, I can just clamp on a capo and use the same chord finger pattern.

Quite often, when I have to play in a different key, I lose the old finger pattern and have to re learn the picking part.

It has never mattered to me what key someone else sang in, I had to sing it in my key, and that meant transposing.That brings up something else, that is,I don't have a key, as such. It depends on where it is comfortable for me to sing it, so I know songs in every key from A to G and all the flats, sharps and minors in between. I can't get my head around the idea of having a key that I sing in.