Posted by Harry on December 10, 2001 at 08:28:18:
In Reply to: what!? no Ab tuba? posted by Kenneth Sloan on December 08, 2001 at 22:23:53:
I had a fifth valve added to my Mirafone 186 4-U which when depressed placed the horn into the key of Ab. This was very useful to people who previously played only the CC and were learning BBb. It's now useful in difficult runs in flatted keys. Harry Critchley