======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '382'
                                          'artist'  'Tori Amos'
                                     'text_people'  ''
                                         'release'  'Strange Little Girls'
                                           'title'  'Raining Blood'
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                                      'lastfmtags'  "['90s', 'piano', 'female vocalists', 'alternative', 'singer songwriter']"
                                     'discogstags'  "['rock', 'alternative rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  '12'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-eos'
                                             'bpm'  '137.571'
                                             'key'  '5B'
                                        'acoustid'  '1de3c0b9-f7e4-4e28-a60c-8a60a4ce7489'
rest: ''

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

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'TBPM' (BPM (beats per minute))                     '137.571'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-eos'
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2001-09-17'
'TIT2' (Title/songname/content description)         'Raining Blood'
'TKEY' (Initial key)                                '5B'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Tori Amos'
'TPE2' (Band/orchestra/accompaniment)               'Tori Amos'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Atlantic'
'TRCK' (Track number/Position in set)               '11/12'
'TSO2'                                              'Amos, Tori'
'TSOP' (Performer sort order)                       'Amos, Tori'
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'TXXX:Acoustid Id'                                  '1de3c0b9-f7e4-4e28-a60c-8a60a4ce7489'
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'TXXX:MusicBrainz Album Id'                         'a75f70d8-4a73-45d7-bb15-20692f1883f4'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
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'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'alternative rock']
'TXXX:lastfmtags'                                   ['90s', 'piano', 'female vocalists', 'alternative', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.32 dB'
'TXXX:replaygain_track_peak'                        '0.467371'
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========================== row from database ==========================
                                              'id'  858733
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Tori Amos/Strange Little Girls/11 - Strange Little Girls - Raining Blood.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  382
                                           'genre'  ifs-songwriter-eos
                                        'filesize'  6119563
                                           'mtime'  1620647054
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 11 ifs songwriter eos
                                      'tag_artist'  Tori Amos
                                     'tag_release'  Strange Little Girls
                                       'tag_title'  Raining Blood
                                             'bpm'  137.571
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                                   'search_artist'  'amos':2 'tori':1
                                  'search_release'  'girls':3 'little':2 'strange':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':4 'songwriter':2
                                    'search_combo'  '00singer':8 'amos':4B 'blood':2A 'eos':10 'girls':7C 'ifs':11 'little':6C 'raining':1A 'songwriter':9 'strange':5C 'tori':3B
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'Q-PIANO-2', 'q-mixbeat-1', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['90s', 'piano', 'female vocalists', 'alternative', 'singer songwriter']
                                        'tag_date'  2001
                                     'discogstags'  ['rock', 'alternative rock']

============================== file details ==============================
                                           'mtime'  1620647054.2529142  (2021-05-10 13:44:14)
                             'size'  6119563