======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '182'
                                          'artist'  'David Bowie'
                                     'text_people'  ''
                                         'release'  'The Singles Collection'
                                           'title'  'Sound & Vision'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
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 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
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                                      'lastfmtags'  "['classic rock', '80s', 'alternative', 'rock', 'glam rock']"
                                     'discogstags'  "['rock', 'pop', 'pop rock', 'glam']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  '19'
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '106.196'
                                             'key'  '9B'
                                        'acoustid'  '4373aa6b-dcf9-4783-aba5-9c402e294950'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Singles Collection'
'TBPM' (BPM (beats per minute))                     '106.196'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '1993'
'TDRC' (Recording time)                             '1993-11-15'
'TFLT' (File type)                                  '/3'
'TIT2' (Title/songname/content description)         'Sound & Vision'
'TKEY' (Initial key)                                '9B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'David Bowie'
'TPE2' (Band/orchestra/accompaniment)               'David Bowie'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'EMI/EMI'
'TRCK' (Track number/Position in set)               '19/19'
'TSO2'                                              'Bowie, David'
'TSOP' (Performer sort order)                       'Bowie, David'
'TSRC' (ISRC (international standard recording code))  'GBAYE7700021/USJT11400011/USJT19900117'
'TXXX:ASIN'                                         'B000006TWZ'
'TXXX:Acoustid Id'                                  '4373aa6b-dcf9-4783-aba5-9c402e294950'
'TXXX:BARCODE'                                      '724382809920'
'TXXX:CATALOGNUMBER'                                '7243 8 28099 2 0/CDEM 1512'
'TXXX:MusicBrainz Album Artist Id'                  '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:MusicBrainz Album Id'                         'dd083466-967b-431c-bfe8-2d7649b518e8'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '5441c29d-3602-4898-b1a1-b77fa23b8e50'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['rock', 'pop', 'pop rock', 'glam']
'TXXX:lastfmtags'                                   ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'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'                        '+1.24 dB'
'TXXX:replaygain_track_peak'                        '0.627616'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'fbe83db0-f6ad-472d-8d8b-8baf44a08682')

========================== row from database ==========================
                                              'id'  1326730
                                            'path'  /data/Music/Bulk/00poprockelectronic/David Bowie/The Singles Collection/1/David Bowie - Sound & Vision.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  182
                                           'genre'  ifs-songwriter
                                        'filesize'  2926973
                                           'mtime'  1636915938
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1 ifs songwriter
                                      'tag_artist'  David Bowie
                                     'tag_release'  The Singles Collection
                                       'tag_title'  Sound & Vision
                                             'bpm'  106.196
                                    'search_title'  'sound':1 'vision':2
                                   'search_artist'  'bowie':2 'david':1
                                  'search_release'  'collection':3 'singles':2 'the':1
                                     'search_rest'  '00poprockelectronic':1 '1':2 'ifs':3 'songwriter':4
                                    'search_combo'  '00poprockelectronic':8 '1':9 'bowie':4B 'collection':7C 'david':3B 'ifs':10 'singles':6C 'songwriter':11 'sound':1A 'the':5C 'vision':2A
                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  9B
                                           '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-4', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', '80s', 'alternative', 'rock', 'glam rock']
                                        'tag_date'  1993
                                     'discogstags'  ['rock', 'pop', 'pop rock', 'glam']

============================== file details ==============================
                                           'mtime'  1636915938.0858157  (2021-11-14 19:52:18)
                             'size'  2926973