[mb-style] [clean up CSG] Structural concept

[Brian Schweitzer]

>> Off topic, but does anyone know of any example work which does indeed
>> have two common names?
>
>Well, from good old CSGStandard/JSBach:
>Kantate, BWV 106 "Gottes Zeit ist die allerbeste Zeit (Actus
>tragicus)": I. Sonatina
>Both the libretto "Gottes Zeit..." and "Actus tragicus" are usually
>printed on covers etc. I just copied that formatting from a release.
>To be precise it was: "Gottes Zeit..." (Actus tragicus)
>Suggestions?

Based on http://www.bach-cantatas.com/Performers/CantusColln-C1 ,
"Actus tragicus" would appear to be the container name (like
"Sanctus") rather than a dual common name, with "Gottes Zeit ist die
allerbeste Zeit" as the movement title:

1) Christ lag in Todesbanden (BWV 4)
2) Gottes Zeit ist die allerbeste Zeit (BWV 106)
3) Der Herr denket an uns (BWV 196)
4) Weinen, Klagen, Sorgen, Zagen (BWV 12)

Which also presents the same type of issue I've run into a few rare
times with either insert arias or collaboratively composer operas,
where either the movement is both collectively and individually
cataloged, or where the catalog number indicates the movement, not the
overall work.

I've suggested for such rare cases moving the movement-specific
catalog number behind the track title, in square braces, so:

Kantate: I. Actus tragicus: "Gottes Zeit ist die allerbeste Zeit":
Sonatina [BWV 106]

just like these two:

Der Stein der Weisen: Act II. Duett. "Nun, liebes Weibchen" (Lubanara,
Lubano) [K. 592a / KV 625]
Il dissoluto punito, ossia il Don Giovanni, K. 527: Anhang. Act I,
Scene XIV. No. 10a Aria. "Dalla sua pace" (Don Ottavio) [K. 540a]

Brian