I am currently having a question. There is a group, which is consisted of different units. I want to find out a way to make the tags of the songs together form a folder-like(???) system on the computer. Like inside the main group are the units, and inside the units are the songs of the units. It can also be like that for the genres, like inside pop there is tons of other kinds of dream pop, bubblegum pop, ... I'm not sure if that is possible, but if anyone has a solution, I would be grateful!