Yamaha Reface CP. Hidden Piano sound? Full video unedited.

I just turned on my Yamaha reface CP and it was set to RD1 but the sound coming out was an acoustic piano. This must be a hidden secret sound? I've no idea how it got there and i can't get it back now. Anyone else figured it out? Must be some kind of keypress on power up?

Yamaha UK have responded saying they have no knowledge of this sound but will contact me if they find it on their CP.

Firmware 1.30
I just turned on my Yamaha reface CP and it was set to RD1 but the sound coming out was an acoustic piano. This must be a hidden secret sound? I've no idea how it got there and i can't get it back now. Anyone else figured it out? Must be some kind of keypress on power up?

Yamaha UK have responded saying they have no knowledge of this sound but will contact me if they find it on their CP.

Firmware 1.30

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