Aggregates (esp. music)

One of the great difficulties that we run into in bibliographic data is 
how to deal with "aggregates" - that is, those items that contain more 
than one significant piece of content. The best example is always the 
music CD, in which multiple works are published together even though 
they are
1) separate works
2) possibly not related to each other in any intellectual sense

As an example, here is a fairly simple example from the LC catalog:
http://lccn.loc.gov/41012981

LC Control No.: 	41012981
LCCN Permalink: 	http://lccn.loc.gov/41012981
000 	00961cam a2200241u 450
001 	7850225
005 	20050628091432.0
008 	830309s1940 nyu 000 0 eng
035 	__ |9 (DLC) 41012981
906 	__ |a 0 |b cbc |c premunv |d u |e ncip |f 19 |g y-gencatlg
010 	__ |a 41012981
040 	__ |a DLC |c CarP |d DLC
050 	00 |a M1010.A2 |b W5
100 	1_ |a Wier, Albert E. |q (Albert Ernest), |d 1879-1945, |e ed.
245 	14 |a The piano concertos of Bach, Beethoven, and Brahms.
260 	__ |a New York, |b Longmans, Green |c [1940]
300 	__ |a score (351 p.) 32 cm.
650 	_0 |a Concertos (Piano) |v Scores.
650 	_0 |a Concertos (Harpsichord with string orchestra) |y To 1800 |v 
Scores.
700 	12 |a Bach, Johann Sebastian, |d 1685-1750. |t Concertos, |m 
harpsichord, string orchestra.
700 	12 |a Beethoven, Ludwig van, |d 1770-1827. |t Concertos, |m piano, 
orchestra.
700 	12 |a Brahms, Johannes, |d 1833-1897. |t Concertos, |m piano, 
orchestra.

Each 700 with a $t needs to be represented as a creative work in its own 
right. That is not the case, however, for all 700's. In addition, the 
"focus work" of the record, that represented by 100/245, is a creative 
work.

I have a number of questions about this, but I suppose that the first 
one is: is the container/contained significant for any of our use cases? 
Answering for my use case, library holdings, I do think it is. The Music 
Recording schema has "inAlbum" and seems to be oriented toward showing 
the playlist within the album. The example in schema.org is of a single 
band and single "tracks" whereas the classical music case is more difficult.

Since I brought this up, I will try to mock up a schema.org example for 
my CD, above.

Music also brings up some issues of data elements - library data relies 
heavily on key, instruments, and standard numbers.

kc

-- 
Karen Coyle
kcoyle@kcoyle.net http://kcoyle.net
ph: 1-510-540-7596
m: 1-510-435-8234
skype: kcoylenet

Received on Thursday, 29 November 2012 15:37:58 UTC