I managed to copy/paste the music.
Well, I cannot change some instruments, the piccolo sounds like a violin even if I change it to piccolo again. Bass singer is ok, but bass drum sounds like a piano, and when I want to change, there is no “Unpitched percussions” instrument family available to choose from. I managed to find that instrument family in fact some hours ago but I do not remember what I was doing. Typically it does not appear even if I have done “Playback Template” as suggested.