Nigel, having a bad day? Hope this helps.

I ran the demo you mentioned and soloed the bass and lead guitar. Johnny is certainly all over the place, but not really in a bad way. Its blues! I did near some sour notes in a few places with a critical listen. So I ran it over into melodyn to see the individual pitches. For the very most part Key of E as claimed. Mostly major blues, with the occasional G (flat 3rd) A#(b5) C(b6). Take a look. Nothing really unusual for a blues player in my (limited) experience. But "hopelessly out of tune" - not what I heard.

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