======================== unified (from filesystem) ========================
                                         'bitrate'  '200.265'
                                        'duration'  '251'
                                          'artist'  'Bertine Zetlitz'
                                     'text_people'  'Bertine Zetlitz/Fred Ball'
                                         'release'  'music for maniacs'
                                           'title'  'Midnight'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['norwegian', 'female vocalists', 'electronic', 'pop', 'synthpop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'set-pl-maniacs'
                                             'bpm'  '125.0'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'music for maniacs'
'TBPM' (BPM (beats per minute))                     '125.0'
'TCOM' (Composer)                                   'Bertine Zetlitz/Fred Ball'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-maniacs'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Midnight'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bertine Zetlitz'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'EMI Music Distribution'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['norwegian', 'female vocalists', 'electronic', 'pop', 'synthpop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.87 dB'
'TXXX:replaygain_track_peak'                        '0.491779'

========================== row from database ==========================
                                              'id'  648284
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/music for maniacs/Bertine Zetlitz - midnight.mp3
                                         'working'  None
                                         'bitrate'  200
                                    'duration_sec'  251
                                           'genre'  set-pl-maniacs
                                        'filesize'  6298626
                                           'mtime'  1620347350
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm midnight set pl
                                      'tag_artist'  Bertine Zetlitz
                                     'tag_release'  music for maniacs
                                       'tag_title'  Midnight
                                             'bpm'  125.0
                                    'search_title'  'midnight':1
                                   'search_artist'  'bertine':1 'zetlitz':2
                                  'search_release'  'for':2 'maniacs':3 'music':1
                                     'search_rest'  'midnight':1 'pl':3 'set':2
                                    'search_combo'  'bertine':2B 'for':5C 'maniacs':6C 'midnight':1A,7 'music':4C 'pl':9 'set':8 'zetlitz':3B
                                    'tag_tracknum'  6
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['norwegian', 'female vocalists', 'electronic', 'pop', 'synthpop']
                                        'tag_date'  2006
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620347350.095672  (2021-05-07 02:29:10)
                             'size'  6298626