Low Profile CRTs?

I was wondering if anyone knows of any CRT's that are very
low-profile? I know that quite a bit of space is required for the
emittor, but are there any '90 degree' CRT's out there that maybe use
a mirror to reflect the emissions onto the display or something like
that?
Basically, im trying to build an oscilloscope into the body of an
electric bass guitar, so you can see every note thats being played.
I have to fit a mini CRT into an area about 2 inches deep, and the
smallest CRTs ive found (with any sort of decent, usable screen size),
are at least 2.5, 3 inches long/deep. I had thought of mounting one
sideways, and reflecting the display onto a sort of internal
projection plate, but then I'd have to focus it with a lens probably,
and it still would quite look right

I dont want to use LCD, because most of the LCD scopes i see have
black lines, instead of the cool glowing green dot/lines like a CRT.

Any Ideas?
-Doc

 

[BWL]

Sony made a small set (about 3 or 4" I seem to remember) a number of years ago
with a lolipop tube exactly like what you're describing; I've not seen one in
at least 5 or 6 years, but you may be able to find one if you search hard
enough...