Cubase SE Piano on every track

I have a Yamaha S90es running through an RME Fireface using Cubase SE (pretty old). When I play live or when I record the sound I hear is not only the instrument I’ve selected from the patch bank but it always plays a piano sound along with it. How do I get rid of this?

I’m sincerely trying to figure all this out. After 10 hours I had to pose a question.

I should note I’ve done everything I can find in the manual to do.