v3.0 of the BIBFRAME ontology will include properties and classes that were part of the Performed Music Ontology (PMO). As catalogers become more comfortable using these properties and classes in music cataloging, there is an opportunity to deprecate properties and classes from the original BF ontology.
Potential candidates for deprecation include:
MusicEnsemble
MusicInstrument
MusicVoice
ensembleType
instrument
instrumentalType
voice
voiceType
If systems are using these properties and classes, please add a comment to this issue.