The Piano track is in another color ... is an MST track?
From the Help:
The color of the instrument name indicates its type or state.
- White indicates that the part is empty and is not in use.
- Yellow indicates a MIDI track playing a Band-in-a-Box MIDI part.
- Green indicates a RealTrack instrument. If the track name is underlined it also has RealChart notation.
- Blue indicates a MIDI SuperTrack.
- Red means that the track has been muted. When one of the tracks is being soloed all other tracks will change color to red.
- For the Audio track, yellow shows that an audio recording is present on the track.