Global Tuning Issue

I don't understand what I've done.

I'm running Mainstage 3. All my patches were working perfectly but now they all seem to be tuned down a semitone or two so anything I play is completely off. I can't find why this may have happened. I've checked that all synths tuning is on 0, the transposing is on 0 as well as in the inspector. Is there some sort of global tuning i may have accidentally shortcutted to? Everything is thrown off now and nothing makes sense.

Has anyone had this problem before? How can I fix it? 😟