Thanks you a lot. I'll try to understand how the MakeReharsal works, and to use it. In the mean time, I've understood the reason of the problem: each staff was mapped on the same MIDI channell, so it was impossible for NWC to play a different instrument or volume on the same channel. Probably it coud be obvious, by I still don't know enough about the program. Again, thank you for your suggestion
Hello! I'm still a beginner. I've a problem: I've successfully imported a MIDI file found in internet in my NWC version 2.75. The new nwc file is well working, and I only tried to change instrument and volume for the staves using as usual the staff Properties dialog box (I'm a choir member, and I need to have the alto voice louder than other voices). In other nwc files (some also imported from MIDI files) I was able to do these changes, but not in this file. There is something I must do before to the file/to the staves for allowing these changes? Thank you in advance...