[mb-style] Bach passions and CSG

[Brant Gibbard]

> 
> Well, Andrew, why do *you* need all that in? How does seeing 
> "BWV 244" 
> in your track titles enhance your experience of the SMP?
> 
> > 

By enabling me to find it. Catalogue numbers have the advantage of being
language independent. A search for BWV 244 should find the work regardless
of whether it was entered under Matthew, Matthäus, Matthieu, Matteo, or what
have you.