======================== unified (from filesystem) ========================
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                                        'duration'  '121'
                                          'artist'  'The Willis Brothers'
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                                         'release'  "24 Great Truck Drivin' Songs"
                                           'title'  'Blazing Smokestack'
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                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '24'
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '135.094'
                                             'key'  '12B'
                                        'acoustid'  '05d900cc-bbee-47ce-96fd-16f7a965e334'
rest: ''

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'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDOR' (Original release time)                      '1987'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'Blazing Smokestack'
'TKEY' (Initial key)                                '12B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Willis Brothers'
'TPE2' (Band/orchestra/accompaniment)               'The Willis Brothers'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Deluxe'
'TRCK' (Track number/Position in set)               '3/24'
'TSO2'                                              'Willis Brothers, The'
'TSOP' (Performer sort order)                       'Willis Brothers, The'
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'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
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'TXXX:Q-PLAY'                                       '2'
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'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['country', 'oklahoma', 'male vocalists', 'kansas city', 'missouri']
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'TXXX:q-mixbeat'                                    '1'
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========================== row from database ==========================
                                              'id'  1531828
                                            'path'  /data/Music/Bulk/00localcharacter/The Willis Brothers - 24 Great Truck Drivin_ Songs/03 - Willis Brothers - Blazing Smokestack.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  121
                                           'genre'  loc-namerica-country
                                        'filesize'  3897238
                                           'mtime'  1621629835
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                                        'rest_str'   00localcharacter Drivin_ 03 loc namerica country
                                      'tag_artist'  The Willis Brothers
                                     'tag_release'  24 Great Truck Drivin' Songs
                                       'tag_title'  Blazing Smokestack
                                             'bpm'  135.094
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                                   'search_artist'  'brothers':3 'the':1 'willis':2
                                  'search_release'  '24':1 'drivin':4,5 'great':2 'songs':6 'truck':3
                                     'search_rest'  'country':4 'drivin':1 'loc':2 'namerica':3
                                    'search_combo'  '24':6C 'blazing':1A 'brothers':5B 'country':15 'drivin':9C,10C,12 'great':7C 'loc':13 'namerica':14 'smokestack':2A 'songs':11C 'the':3B 'truck':8C 'willis':4B
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['country', 'oklahoma', 'male vocalists', 'kansas city', 'missouri']
                                        'tag_date'  1987
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621629834.9543705  (2021-05-21 22:43:54)
                             'size'  3897238