(Attic Area): these terms have been either deprecated from the core or extentions, or removed from pending
as not accepted into the full vocabulary.
Canonical URL: http://schema.org/DemoAlbum
This vocabulary was improved through collaboration with the MusicBrainz project
(www.musicbrainz.org), and is partially inspired by the MusicBrainz and
Music Ontology schemas.
Schema Version 3.4