I have been thinking of how I can file songs with the appropriate styles. The problem with using folders, for one thing, is the double .pats. If I put a song in a separate folder(with it's own config file), like on my other keyboards, and add a "finder", the problem would be solved. The problem is your interface is not set up to handle a couple of hundred songs in that manner.
For a few songs, it would be simple for me to go into the arrangedata file/style/Rom and make up some folders, but I don't know how many folders can be put on the "My Songs" bar. In the absence of a "finder"(search), they could be arranged alphabetically per your previous post.
You can put infinites folders in the My songs bar.
I am working on the ability to have subfolders too.
So you can create organise your songs better.
Also a "finder" is on the way...
That is great news. The ability to save all of the components of your set up and the ability to pull it up fast is most important.
I had no hopes of you doing all this. Most exciting.