Originellement posté par Noel96
Is the Realtrack on BIAB's original Melody or Soloist track. These are tracks #6 and #7 (from the top of the mixer). Since the original Melody and Soloist tracks were originally designed for user-input and playable notation, it's possible that the volume control affects the audio as well as the underlying MIDI.
If Guitar 2 is on the original Melody or Soloist track, try moving it to a Utility track and erasing it from its present track. That might be make a difference.

Hello Noel,

As you can see from the last screenshot I sent, the track I'm having the problem with is a "Utility" track: it's not the Melody track or the Soloist track.

But your comment made me think about deleting the notes displayed in the RealTrack's notation window, i.e., the MIDI notes. Well, after deleting the displayed notes, I no longer hear the piano at the same time as the guitar!

As I was saying to Mario D: it's as if the underlying MIDI notes of a "Utility" RealTrack (but may be also a classic RealTrack) are played by default when they should NOT be played by default! Isn't there a setting somewhere that prevents this?

Best

Lazy Bird