In order to play any type of note you need to practice them, so if you want to be able to play the lowest note possible on a EEb or BBb you're not going to do it by going no lower than a C, the same applies to doing 4, 8, or 12 bar phrases these are achieved by doing long notes, hymm tune...
We have something we used it a while ago, if you contact our band sec ( Michael Whybrow ) through the web link in my signature I'm sure our band can help you out.
Or as Pete states use the middle section from the Crossbearers.
As the title suggests I have a VB 24AW for sale, this is around 2 years old but has no chips or plating missing, it's always been washed after use and placed in the dish washer 1 a week so all is good.
PM with offers over £50 plus £5 P&P.