======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '166'
                                          'artist'  'Caesar'
                                     'text_people'  ''
                                         'release'  'Caesar'
                                           'title'  'In Flames'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'Q-PIANO-3', 'q-chart-2', 'q-drums-3', 'q-other-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'rock', 'excelsior', 'alternative', 'dutch']"
                                     'discogstags'  "['trance', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '04'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie-rock'
                                             'bpm'  '89.731'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'TALB' (Album/Movie/Show title)                     'Caesar'
'TBPM' (BPM (beats per minute))                     '89.731'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie-rock'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'In Flames'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '166243'
'TPE1' (Lead performer(s)/Soloist(s))               'Caesar'
'TRCK' (Track number/Position in set)               '04'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['trance', 'electronic']
'TXXX:lastfmtags'                                   ['indie', 'rock', 'excelsior', 'alternative', 'dutch']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.25 dB'
'TXXX:replaygain_track_peak'                        '0.409212'

========================== row from database ==========================
                                              'id'  1251728
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Caesar/Caesar/04 - Caesar - In Flames.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  166
                                           'genre'  ifs-songwriter-indie-rock
                                        'filesize'  2661940
                                           'mtime'  1637950053
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 04 ifs songwriter indie rock
                                      'tag_artist'  Caesar
                                     'tag_release'  Caesar
                                       'tag_title'  In Flames
                                             'bpm'  89.731
                                    'search_title'  'flames':2 'in':1
                                   'search_artist'  'caesar':1
                                  'search_release'  'caesar':1
                                     'search_rest'  '00singer':1 'eos':3 'ifs':4 'indie':5 'rock':6 'songwriter':2
                                    'search_combo'  '00singer':5 'caesar':3B,4C 'eos':7 'flames':2A 'ifs':8 'in':1A 'indie':9 'rock':10 'songwriter':6
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'rock', 'excelsior', 'alternative', 'dutch']
                                        'tag_date'  2003
                                     'discogstags'  ['trance', 'electronic']

============================== file details ==============================
                                           'mtime'  1637950053.2777524  (2021-11-26 19:07:33)
                             'size'  2661940