Quote:
riff isn't even theirs, that it's likely an old classic blues riff. Although he doesn't have a specific example to offer as proof, he seems pretty confident about it.


Hmmmm, just from the straight math of the situation, it's hard to imagine that there is any pentatonic riff or blues scale riff which hasn't been done.


As far as your actual question, let me mull this over a bit. I'm not at a machine right now where I can use the speakers, and I can't recall that opening riff right now. (I know, shameful! They may have to revoke my fan club card.)

Somehow I suspect someone else will get back to you with an answer before I do,
but I have a 10 CD set of Classic Blues sitting at home waiting for me.
This might be just the excuse I need to crack into it.

(Classic Blues are fun, but I have to take lo-fi 1930's recordings in small doses...)