[mb-style] Disc Numbers for singles

[Orion]

> There's a corner case (that I think Tarragon pointed out) of multi-disc 
> singles, but that's a really odd one I think.  A straw poll - are people 
> aware of many (any?) multi-disc audio singles that have *never* been 
> released as individual discs (ie I'm not talking about single box sets 
> here, or singles packaged with DVD videos).

I can only think of one myself - 
http://www.kronekodow.com/discography/singles.html  last entry there. 
3disc, 8cm single cd set with 3 songs per disc.  Was all new live 
versions or studio songs that hadn't been on anything yet, not 
previously released material and classified as a single, not an album.