I run BB 2020 V7 13 64 bit

I have a song, where I inputted everything myself (chords, melody and flute background).

So I selected: _Loungin.Sty, to get some more horn background, but now I have no sound from my MIDI-piano track. I can see there are notes on this track, and they change color (to red), when they are supposed to make sounds. Yet there is no piano sound!

In the Mixer the piano track volume is set to 90, but there is no green horizontal line to indicate there is sound.

When I go into the Assign Real Track to Track, I get a piano sound only when I choose “Solo”.

When I select another Style (e.g. Bossa Piano Trio), there is still no piano sound.

Any suggestion how to get the piano sound back?
Tonnie