# Levels in the structure of works

**URL:** https://community.metabrainz.org/t/levels-in-the-structure-of-works/293047
**Category:** Classical
**Tags:** works
**Created:** [June 26, 2017, 7:13pm UTC](https://community.metabrainz.org/t/levels-in-the-structure-of-works/293047 "2017-06-26T19:13:07Z")
**Posts on this page:** 1
**Showing post:** 127

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### Author: ![ProfChris](https://community.metabrainz.org/letter_avatar_proxy/v4/letter/p/7ab992/32.png) [@ProfChris](https://community.metabrainz.org/u/ProfChris)
#### Post date: [September 25, 2017, 10:36am UTC](https://community.metabrainz.org/t/levels-in-the-structure-of-works/293047/127 "2017-09-25T10:36:14Z")

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Apologies for not replying earlier - I seem to have missed some of the discussion. I agree with the structure proposed.  
Suggest that “Collection” here is used to denote works which are related either by the composer (Wagner’s Ring Cycle), or by being frequently recorded/performed together (Bach’s Well Tempered Klavier Book 1).  
IMO the use of this “Collection” relationship versus the Work/Series relationship needs clarification. Perhaps the latter should be reserved for Opus (Bach BWV series) and Published (Bach Anna Magdalene Notebook) collections, and renamed “Catalogued in” and “Published in”. I know that there will still be some anomalies, but it might help clear the fog.

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