======================== unified (from filesystem) ========================
                                         'bitrate'  '220.338'
                                        'duration'  '210'
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                                      'lastfmtags'  "['alternative', 'female vocalists', 'pop', 'folk', 'singer songwriter']"
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '12'
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '133'
                                             'key'  '3A'
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rest: ''

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

'COMM::eng'                                         'Encoded by Mnemònic'
'TALB' (Album/Movie/Show title)                     'Nine Objects of Desire'
'TBPM' (BPM (beats per minute))                     '133'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '1996'
'TDRC' (Recording time)                             '1996'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Stockings'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Suzanne Vega'
'TPE2' (Band/orchestra/accompaniment)               'Suzanne Vega'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'A&M Records'
'TRCK' (Track number/Position in set)               '4/12'
'TSO2'                                              'Vega, Suzanne'
'TSOP' (Performer sort order)                       'Vega, Suzanne'
'TSRC' (ISRC (international standard recording code))  'USAM19604272'
'TXXX:Acoustid Id'                                  'b73aea83-c918-49da-b19c-775fc321fcfe'
'TXXX:Artists'                                      'Suzanne Vega'
'TXXX:BARCODE'                                      '731454058322'
'TXXX:CATALOGNUMBER'                                '540 583 2'
'TXXX:MusicBrainz Album Artist Id'                  'cf119120-7df5-47d7-9dec-49f8837a4e40'
'TXXX:MusicBrainz Album Id'                         'e0a1416e-5698-4117-ad3a-975fb08bd115'
'TXXX:MusicBrainz Album Release Country'            'XE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'cf119120-7df5-47d7-9dec-49f8837a4e40'
'TXXX:MusicBrainz Release Group Id'                 'c9eb98ef-de35-3796-9829-ad33aa216226'
'TXXX:MusicBrainz Release Track Id'                 'b76bbb69-1fd1-4627-b746-ca65a3f5d757'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['alternative', 'female vocalists', 'pop', 'folk', 'singer songwriter']
'TXXX:originalyear'                                 '1996'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.22 dB'
'TXXX:replaygain_track_peak'                        '0.527297'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Suzanne Vega - 1996 - nine objects of desire/04 - Suzanne Vega - Stockings.mp3
                                         'working'  None
                                         'bitrate'  220
                                    'duration_sec'  210
                                           'genre'  ifs-songwriter
                                        'filesize'  5809417
                                           'mtime'  1628357296
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1996 nine objects desire 04 ifs songwriter
                                      'tag_artist'  Suzanne Vega
                                     'tag_release'  Nine Objects of Desire
                                       'tag_title'  Stockings
                                             'bpm'  133.0
                                    'search_title'  'stockings':1
                                   'search_artist'  'suzanne':1 'vega':2
                                  'search_release'  'desire':4 'nine':1 'objects':2 'of':3
                                     'search_rest'  '00singer':1 '1996':4 'desire':7 'eos':3 'ifs':8 'nine':5 'objects':6 'songwriter':2
                                    'search_combo'  '00singer':8 '1996':11 'desire':7C,14 'eos':10 'ifs':15 'nine':4C,12 'objects':5C,13 'of':6C 'songwriter':9 'stockings':1A 'suzanne':2B 'vega':3B
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['alternative', 'female vocalists', 'pop', 'folk', 'singer songwriter']
                                        'tag_date'  1996
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1628357296.2503712  (2021-08-07 19:28:16)
                             'size'  5809417