Composition sorting (and Haydn symphonies)

[magister]

I'm in the process of ripping the complete Haydn symphonies that I just bought as a boxed set. That's 107 symphonies spread over 37 CDs. The issue of getting works to sort in "natural" order (i.e., 1 - 5 - 10 not 1 - 10 - 5) has come up before here. In this thread winxi explains how to address the problem if the album title is also the title of the work. In my situation, I'm using Composition and Group tags since each CD has multiple symphonies on it.

Is the best solution to create a CompositionSort tag, along the lines of the ComposerSort and AlbumSort tags? CompositionSort would have the padded numbers, while Composition would have the regular format. Then I would include CompositionSort:Composition under IndexTags and Composition under ItemTags -- is that right?

Thanks - magister

PS: I would like to acknowledge the kind person(s) who entered the metadata for the Haydn symphonies performed by the Stuttgart Chamber Orchestra with Dennis Russel Davies into the accuraterip database. While I have needed to adjust some of it, having it there (for all 37 CDs) to start with has saved me a _lot_ of time. And, if anyone wants all of Haydn's symphonies, I've been pleased so far with the ones I've listened to. This set got a few negative reviews online and Sony let it go out of print, but you can get it used and I think it's a good choice.