======================== unified (from filesystem) ========================
                                         'bitrate'  '64.0'
                                        'duration'  '219'
                                          'artist'  'Cardingans'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', "
 "'q-vocals-2', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['pop', 'rock', 'female vocalists', 'swedish', 'alternative']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '145.790'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '145.790'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1995'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Cardingans'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['pop', 'rock', 'female vocalists', 'swedish', 'alternative']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.06 dB'
'TXXX:replaygain_track_peak'                        '0.535883'

========================== row from database ==========================
                                              'id'  1294065
                                            'path'  /data/Music/Bulk/00poprockelectronic/Cardigans/Cardigans - Carnival.mp3
                                         'working'  None
                                         'bitrate'  64
                                    'duration_sec'  219
                                           'genre'  rock-unsorted
                                        'filesize'  1759247
                                           'mtime'  1620389436
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Cardigans Cardigans Carnival rock unsorted
                                      'tag_artist'  Cardingans
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  145.79
                                    'search_title'  None
                                   'search_artist'  'cardingans':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 'cardigans':2 'carnival':3 'rock':4 'unsorted':5
                                    'search_combo'  '00poprockelectronic':2 'cardigans':3 'cardingans':1B 'carnival':4 'rock':5 'unsorted':6
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-piano-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', 'female vocalists', 'swedish', 'alternative']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620389436.3913293  (2021-05-07 14:10:36)
                             'size'  1759247