"Oh Mary"

So this simple rhythm and blues groove came on the shuffle now, and my ears tell me it goes like this:

Intro: G

verse:
12-bar blues in G

chorus :
just play G chord, except for these bits:
- One chance if I [D7] can

- [D7]Let me be your loving [G]man

guitar solo at 2m10s takes off like this:

-------3----6---6'-6'-------6----
-6-3-6---6----8-------8-8-6---8--
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... so basically G minor pentatonic noodling with a fuzzy tone...