You can add folders, songs, and files to a pitch. You can also arrange all of these assets in the pitch in any order that you wish.
In a custom pitch, you have a folders section, a songs section, and a files section. Each one of these sections can be reordered.
All you need to do is drag and drop the assets in the order you wish:
You can also open a folder and organize its contents as well by double clicking the folder in the pitch edit modal:
Note: These changes only apply to the pitch itself, not the assets in your catalog.