[Zubersoft]

With the current design, it is not possible to have folders, as file systems allow infinite depth, and I did not want the complexity or overhead with trying to support that in the database.  The UI would also need to operate differently in order to support multiple levels of depth. I have considered in the future adding support for a new custom tab where users could organize their songs using a file system like approach with folders. Having said that, in normal practice, it's usually not necessary to have multiple levels of depth to organize the library and find things quickly. For example, you have multiple orchestras, so you could either allocate all of the songs for each orchestra into their own collection (and then filter on collection using the dropdown on the far left side of the filters bar), or you could use the "Switch Library" option under Settings->Library Settings to have an entirely different database for each orchestra. You could then utilize the Years tab (Settings->Library Settings->Tab Order to enable the Years tab) to quickly find all of the songs for a given year under the currently selected orchestra. You could also just type the year to search for into the search box, and it should also correctly filter based on that. 

Mike