======================== unified (from filesystem) ========================
                                         'bitrate'  '229.312'
                                        'duration'  '185'
                                          'artist'  'Trans-Siberian Orchestra'
                                     'text_people'  "Kinkel/Paul O'Neill"
                                         'release'  'The Lost Christmas Eve'
                                           'title'  'Wizards in Winter'
                                           'quals'  "['q-bass-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '23'
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'Christmas'
                                             'bpm'  '146.0'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '146.0'
'TCMP'                                              '0'
'TCOM' (Composer)                                   "Kinkel/Paul O'Neill"
'TCON' (Content type, a.k.a. Genre)                 'Christmas'
'TDRC' (Recording time)                             '2004-10-12'
'TDRL' (Release time)                               '2004-10-12'
'TDTG' (Tagging time)                               '2007-09-11 18:18:22'
'TIT2' (Title/songname/content description)         'Wizards in Winter'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Trans-Siberian Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Trans-Siberian Orchestra'
'TPUB' (Publisher)                                  'Lava'
'TRCK' (Track number/Position in set)               '4/23'
'TSOP' (Performer sort order)                       'Trans-Siberian Orchestra'
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'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
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========================== row from database ==========================
                                              'id'  1538174
                                            'path'  /data/Music/Other/PrevSet/[8ohdear]/Trans-Siberian Orchestra - Wizards In Winter.mp3
                                         'working'  None
                                         'bitrate'  229
                                    'duration_sec'  185
                                           'genre'  Christmas
                                        'filesize'  5336676
                                           'mtime'  1662800506
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [8ohdear] In
                                      'tag_artist'  Trans-Siberian Orchestra
                                     'tag_release'  The Lost Christmas Eve
                                       'tag_title'  Wizards in Winter
                                             'bpm'  146.0
                                    'search_title'  'in':2 'winter':3 'wizards':1
                                   'search_artist'  'orchestra':4 'siberian':2 'trans':1 'transsiberian':3
                                  'search_release'  'christmas':3 'eve':4 'lost':2 'the':1
                                     'search_rest'  '8ohdear':2,3 'in':4 'prev':5 'prevset':1 'set':6
                                    'search_combo'  '8ohdear':13,14 'christmas':10C 'eve':11C 'in':2A,15 'lost':9C 'orchestra':7B 'prev':16 'prevset':12 'set':17 'siberian':5B 'the':8C 'trans':4B 'transsiberian':6B 'winter':3A 'wizards':1A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['q-bass-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800506.4102664  (2022-09-10 11:01:46)
                             'size'  5336676