Mario, in the video, it's Guitar 2 (not visible on the screen shot).
It does sound like a piano playing the MIDI. The MIDI with some RealTracks is not meant to be heard; it is to show notation for educational purposes. As to what is doing it here, I think we need to have your song file posted somewhere that we can download.
I could be very wrong about this, but I'm not remembering any new MIDI features introduced between BIAB 2020 and 2025.
Hello Matt,
Here's a link to download the track corresponding to the two videos I sent:
https://drive.google.com/file/d/1WSo2gGbdVl4Itjdc7WMl6ShvOXxZZ7Oi/view?usp=sharingPlease note, I don't encounter this problem every time. So, I don't know if you'll encounter it too.
However, could you try to see if you can also hear the drums when you select channel 10 in Track Settings, MIDI Channel for the Guitar 2 (or Guitar 3, or Vibes 2, or Vibes 3) realtrack? If so, do you think this is normal for a realtrack?
Best.