[Dixielandjazz] brass & eyesight

[Robert Smith]

Hello Jim,

I've just tried looking at the screen while playing the trombone. I played 
the whole gamut from pedal E to F above top Bb. The only effect on my 
eyesight was a slight apparent vibration of the screen when playing pedal E 
and pedal F at full volume. This was on a Blessing Artist large bore 
instrument that I keep downstairs for practice. Next time I take my King 
instrument downstairs I'll also try using that on the same experiment.

Bob "suddenly cross-eyed" Smith