Aggregation

[musicus]

music21 stream methods are not inherited in 3.x.x but should be, since they are inherited when a piece is singularly imported.

[musicus]

However, music21 stream data can be accessed the following way (for the first piece in the aggregation):

files = ('Directory/to/file')
file_collection = Importer(files)
file_collection._pieces[0]._score.metadata.all()