Posted by Typically, on February 02, 2004 at 17:55:42:
In Reply to: 5th valve on a CC Tuba? posted by Aaron on February 02, 2004 at 17:21:47:
a currently-manufactured CC tuba's 5th valve is a WHOLE STEP slide which is in tune with the (key of G) 4th valve. This is just enough to make the instrument "fully chromatic", and to offer a few advantageous pitch corrections as well.