Posted by Art H on December 21, 2001 at 23:54:07:
In Reply to: 5th valve on your 4th posted by Patrick on December 21, 2001 at 19:17:31:
I have always advocated a large-bore 4th valve with 5th and 6th valves in the 4th valve tubing. The fingerings are simple, you can get every note in tune easily, and you get the free-blowing quality of a 4-valve instrument. But I have not yet actually built such an instrument.