Moved to a new PC and totally confused

[Kap1A]

As mentioned, you can do so by using the Path Criteria in Collections.

Also if Christmas music is Type = Classical you can remove Type = Classical from the Music Collection to hide these files.

This is, what I did yesterday and it worked. It is like it is that the other different soundfiles are in different folders on the old hard disk and as copied, on the new disk. For now it works for me.