... and possibly teaching you grannies to suck eggs
I always feel that I'm probably saying stuff the whole world already knows, but just in case...
I recorded this for a work colleague who's just getting into some blues stuff.
Going from a basic 12 bar blues in A to a slightly more fun version. I think I said Dmin when I meant Emin (and I played the wrong chord briefly...) when explaining the first ii-V-I but that aside you should be able to fathom this out quite easily.
This is the starting point:
| A | A | A | A |
| D | D | A | A |
| E | E | A | A ||
and this is where we ultimately end up:
| A | D7 | A | Em7 / A7 / |
| D7 | D#dim | A | A/C# / Cdim / |
| Bm7 | E7 | A/C# / Cdim / | Bm7 / E7/ ||
where A/C# is that inversion where C# is the bass note.