======================== unified (from filesystem) ========================
                                         'bitrate'  '242.387'
                                        'duration'  '222'
                                          'artist'  'Tortoise'
                                     'text_people'  ''
                                         'release'  'TNT'
                                           'title'  'The Equator'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['instrumental', 'post rock', 'instrumental rock', 'experimental', 'ambient']"
                                     'discogstags'  "['electronic', 'rock', 'post rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  '12'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'rock-post'
                                             'bpm'  '132.2'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000001CC 000001FC 00001947 00001F7F 0000E4B9 0000E4B9 00007693 000075CD '
 '000220F5 000220F5')
'TALB' (Album/Movie/Show title)                     'TNT'
'TBPM' (BPM (beats per minute))                     '132.2'
'TCON' (Content type, a.k.a. Genre)                 'rock-post'
'TDRC' (Recording time)                             '1998'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Sicherer Modus)'
'TIT2' (Title/songname/content description)         'The Equator'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tortoise'
'TPE2' (Band/orchestra/accompaniment)               'Tortoise'
'TRCK' (Track number/Position in set)               '05/12'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'post rock']
'TXXX:lastfmtags'                                   ['instrumental', 'post rock', 'instrumental rock', 'experimental', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.77 dB'
'TXXX:replaygain_track_peak'                        '0.839374'

========================== row from database ==========================
                                              'id'  346814
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Tortoise/[1998] TNT/05 The Equator.mp3
                                         'working'  None
                                         'bitrate'  242
                                    'duration_sec'  222
                                           'genre'  rock-post
                                        'filesize'  6763542
                                           'mtime'  1621489557
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm [1998] 05 rock post
                                      'tag_artist'  Tortoise
                                     'tag_release'  TNT
                                       'tag_title'  The Equator
                                             'bpm'  132.2
                                    'search_title'  'equator':2 'the':1
                                   'search_artist'  'tortoise':1
                                  'search_release'  'tnt':1
                                     'search_rest'  '1998':1,2 'post':4 'rock':3
                                    'search_combo'  '1998':5,6 'equator':2A 'post':8 'rock':7 'the':1A 'tnt':4C 'tortoise':3B
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'post rock', 'instrumental rock', 'experimental', 'ambient']
                                        'tag_date'  1998
                                     'discogstags'  ['electronic', 'rock', 'post rock']

============================== file details ==============================
                                           'mtime'  1621489556.897564  (2021-05-20 07:45:56)
                             'size'  6763542