I have entered a printed sheet of music into Notion. The piano two hands, bass clef and treble clef (as usual) and above it a staff for the clarinet. The clarinet has two crosses as accidentals, and the piano is normal C major.

So the look is like the printed original, which sounds very nice when played live.

The same note image now played back in Notion sounds awful. The clarinet has a wrong pitch. Although the staff was chosen as a B-flat clarinet.

What could be the reason for this? Can anyone help?