Down by the river near Woodstock

Notice for example that the first riff everyone learns, "Smoke on the Water" has essentially the same notes, as has "Too Drunk too F**k" by the Dead Kennedys.

Locrian is probably the very last thing to look at when analysing a musical piece.  

That said, the dark, moody restless quality is partly due to that b5, the interval that gives the dom7 its zing, blues its bite and classical Western harmony its perfect cadence.

Maybe I should write commercial voiceovers.

Gadzooks, methinks thou hast found a new calling for thy gifts!

And, no, I don't think anyone was seeking a Locrian pattern, but it does seem to be part of the deep grammatical structure here.  

I know, I know, I'm overanalyzing.  It's a curse I live with.  And "Smoke on the Water" was not my first riff.  It was Day Tripper.  That would be an interesting topic to post down in Opinions and Polls.  Think I'll do it now.

Thanks, Helgi.  I appreciate your taking time with my questions.
Tim