======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '360'
                                          'artist'  'Keren Ann'
                                     'text_people'  ''
                                         'release'  'Keren Ann'
                                           'title'  'Liberty'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'Q-PLAY-2', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-2', 'q-vocals-3', 'q-mixbeat-1', "
 "'Q-PIANO-2']")
                                      'lastfmtags'  ("['indie', 'chanson francaise', 'female vocalists', 'french', 'singer "
 "songwriter']")
                                     'discogstags'  "['blues', 'pop', 'chanson']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '145.790'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM::XXX'                                         ('00000779 0000085E 000022C5 000021Ae 00035Ba5 00035B77 00007C85 00007968 '
 '0003A9Ae 00035B8E')
'COMM:ID3v1 Comment:XXX'                            '00000779 0000085E 000022C5 0'
'COMM:iTunNORM:eng'                                 (' 00000779 0000085E 000022C5 000021AE 00035BA5 00035B77 00007C85 00007968 '
 '0003A9AE 00035B8E')
'PRIV:AverageLevel:{\x13\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x13\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Keren Ann'
'TBPM' (BPM (beats per minute))                     '145.790'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Liberty'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Keren Ann'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['blues', 'pop', 'chanson']
'TXXX:lastfmtags'                                   ['indie',
 'chanson francaise',
 'female vocalists',
 'french',
 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.06 dB'
'TXXX:replaygain_track_peak'                        '0.419754'

========================== row from database ==========================
                                              'id'  1267396
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Keren Ann/Keren Ann/07. liberty.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  360
                                           'genre'  ifs-songwriter
                                        'filesize'  8662950
                                           'mtime'  1621630292
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 07. liberty ifs songwriter
                                      'tag_artist'  Keren Ann
                                     'tag_release'  Keren Ann
                                       'tag_title'  Liberty
                                             'bpm'  145.79
                                    'search_title'  'liberty':1
                                   'search_artist'  'ann':2 'keren':1
                                  'search_release'  'ann':2 'keren':1
                                     'search_rest'  '00singer':1 '07':4,5 'eos':3 'ifs':7 'liberty':6 'songwriter':2
                                    'search_combo'  '00singer':6 '07':9,10 'ann':3B,5C 'eos':8 'ifs':12 'keren':2B,4C 'liberty':1A,11 'songwriter':7
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'chanson francaise', 'female vocalists', 'french', 'singer songwriter']
                                        'tag_date'  2007
                                     'discogstags'  ['blues', 'pop', 'chanson']

============================== file details ==============================
                                           'mtime'  1621630291.844664  (2021-05-21 22:51:31)
                             'size'  8662950