This is probably a pretty basic question so apologies in advance. I'm pretty new to walking bass lines but I do understand the theory of how to build them and can do so by following the lead sheet and basically thinking in a chord by chord sort of way. For example if it's a ii-V-I I'm completely thinking Dm7-G7-CMaj7 at the moment. I know this isn't how people really do it for obvious reasons (memorisation, transposing etc). As I understand it most people think in key centres and common chord progressions which I understand in theory but am finding it really difficult to think in this way as I'm playing so I was wondering what people are mainly thinking when playing? Are the chord names (e.g Dm7) part of your thinking at all or is it entirely in key centres, numbers and learn't vocab?