======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '193'
                                          'artist'  'Jack Johnson'
                                     'text_people'  ''
                                         'release'  'Brushfire Fairytales'
                                           'title'  'Posters'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['acoustic', 'alternative', 'chill', 'rock', 'singer songwriter']"
                                     'discogstags'  "['rock', 'alternative rock', 'acoustic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '13'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '84.000'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            '7F0AC80D+207203+13+150+16303'
'COMM:iTunes_CDDB_1:eng'                            '7F0AC80D+207203+13+150+16303+30912+45450+55020+76083+93848+111008+121963+137093+150868+165148+182593'
'COMM:iTunes_CDDB_TrackNumber:eng'                  '3'
'PRIV:AverageLevel:\x01\x18\x00\x00'                PRIV(owner='AverageLevel', data=b'\x01\x18\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Brushfire Fairytales'
'TBPM' (BPM (beats per minute))                     '84.000'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'iTunes v4.9.0.17'
'TIT2' (Title/songname/content description)         'Posters'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Jack Johnson'
'TRCK' (Track number/Position in set)               '3/13'
'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:discogstags'                                  ['rock', 'alternative rock', 'acoustic']
'TXXX:lastfmtags'                                   ['acoustic', 'alternative', 'chill', 'rock', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.71 dB'
'TXXX:replaygain_track_peak'                        '0.639049'

========================== row from database ==========================
                                              'id'  1297469
                                            'path'  /data/Music/Bulk/00poprockelectronic/Jack Johnson/Jack Johnson_/Brushfire Fairytales/03 Posters.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  193
                                           'genre'  ifs-songwriter
                                        'filesize'  3891212
                                           'mtime'  1636915910
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Johnson_ 03 ifs songwriter
                                      'tag_artist'  Jack Johnson
                                     'tag_release'  Brushfire Fairytales
                                       'tag_title'  Posters
                                             'bpm'  84.0
                                    'search_title'  'posters':1
                                   'search_artist'  'jack':1 'johnson':2
                                  'search_release'  'brushfire':1 'fairytales':2
                                     'search_rest'  '00poprockelectronic':1 'ifs':3 'johnson':2 'songwriter':4
                                    'search_combo'  '00poprockelectronic':6 'brushfire':4C 'fairytales':5C 'ifs':8 'jack':2B 'johnson':3B,7 'posters':1A 'songwriter':9
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  12B
                                           '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-2', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'alternative', 'chill', 'rock', 'singer songwriter']
                                        'tag_date'  2000
                                     'discogstags'  ['rock', 'alternative rock', 'acoustic']

============================== file details ==============================
                                           'mtime'  1636915910.398202  (2021-11-14 19:51:50)
                             'size'  3891212