======================== unified (from filesystem) ========================
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                                          'artist'  'Uncle Dave Macon'
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                                           'title'  '(She Was Always) Chewing Gum'
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '143.721'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         '(She Was Always) Chewing Gum'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Uncle Dave Macon'
'TRCK' (Track number/Position in set)               '8'
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'TXXX:lastfmtags'                                   ['country', 'all', 'banjo', 'folk']
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'TXXX:q-mixbeat'                                    '1'
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'TXXX:q-piano'                                      '1'
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                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Uncle Dave Macon - (She Was Always) Chewing Gum.mp3
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                                    'duration_sec'  175
                                           'genre'  loc-namerica-country
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                                           'mtime'  1621628487
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                                      'tag_artist'  Uncle Dave Macon
                                     'tag_release'  Keep My Skillet Good And Greasy [Bear Family] - Disc 1
                                       'tag_title'  (She Was Always) Chewing Gum
                                             'bpm'  143.721
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                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  10B
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                                        'tag_date'  2004
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621628487.28974  (2021-05-21 22:21:27)
                             'size'  7014400