In the key of A, all of these chords CAN sound right (to me), depending on context: A, B, C, D, E, F, G. I find the slippery harmonic shifts like C# to C a bit mind bending and (potentially) a lot of fun. Posted
this tune a few months ago that exercised most of these ideas, just in the key of G. The "wrong" chords helped me express the disorienting effect of being lost in a big city rainstorm...