Posted by Charles on January 25, 2000 at 00:37:26:
In Reply to: Double bell Euphoniums posted by Doug on January 24, 2000 at 22:47:21:
The fifth valve is used to switch from the upright bell to the smaller bell front. The horn
was used as a euphonium (upright bell) for concert and as a valve trombone for marching
(bell front). I believe they were last in catalogs in the 50's.