[Dixielandjazz] Lampshades and clarinets?

[Andy.Ling at Quantel.Com]

Bill Oakley said :

> Last night on TMC they ran a one reeler of the Hal Kemp Orchestra.
> During
> one particular tune the camera panned to the clarinet section and lo,
> they
> had what looked like lamp shades on their clarinets.  Anyone care to
> elucidate on this?

I assume they weren't just lamps stood on the music stands and because
of the angle of the shot, looked like they were attached to
the clarinets.

Andy Ling