Several questions

[swdick]

Thanks again.
Now I get an error about the Group.default{Composition}.
After removing this I get a managable display:
Compositions with more than 1 part are shown in the top and when clicking show the name of the parts.
Compositions with empty titles (parts) are shown with track number with the album in the displaytop.

I'll leave at that. Thanks for all your patient support. You have been wonderfull.