Help please

Hi Group
I've just started using MuseScore primarily with a view to learning how to arrange music for UK style brass bands. I am working on my first piece and playing back each of the parts to judge the balance etc. Strangely, the Euphonium part will not play back any notes above a c sharp. So far as I can tell so far all the other staves play back correctly. Anyone any idea if I have not set something up correctly or is there a known problem?
Appreciate your input please.

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2 years ago