Then I thought that if a pedal or lever on C6 raised #7 to D, raised #8 to Bb, and lowered #9 to E, the notes on strings 3-10 would be:
<font face="monospace" size="3"><pre>C
A
G
E
D
Bb
E
C</pre></font>
which would correspond with
<font face="monospace" size="3"><pre>E
C#
B
G#
F#
D
G#
E</pre></font>
of the E13 tuning.
The tuning would have a different timbre because of the differing string guages and lower notes. It would also have the benefit of an additional 3rd tone on string #2 and an additional 9th tone on #1.
Has anyone in the history of steel had this change on their guitar, basically turning a modern instrument into an "obsolete"
one? It might be useful for playing stuff like "Oklahoma Stomp," "Mr. Steel Guitar," and a bunch of Noel Boggs type material.Or am I crazy?

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Herb's Steel Guitar Pages
Texas Steel Guitar Association