======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '376'
                                          'artist'  'Soft Serve'
                                     'text_people'  ''
                                         'release'  'Good Mood, Bad Mood'
                                           'title'  'a cockroach for leopold'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['33', '5432fun']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '132.4'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00000B70 00000B4C 00008FBC 0000BC2F 0000168D 00002B43 00008339 000082C9 '
 '0003ADBC 00003839')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000804 0000000000FD6FEC 00000000 005BE9CC 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'Good Mood, Bad Mood'
'TBPM' (BPM (beats per minute))                     '132.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2001'
'TENC' (Encoded by)                                 'iTunes 8.0.2.20'
'TIT2' (Title/songname/content description)         'a cockroach for leopold'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Soft Serve'
'TRCK' (Track number/Position in set)               '10'
'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'
'TXXX:lastfmtags'                                   ['33', '5432fun']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.61 dB'
'TXXX:replaygain_track_peak'                        '0.563431'

========================== row from database ==========================
                                              'id'  1375378
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Soft Serve - 2001 - good mood, bad mood/10 - a cockroach for leopold.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  376
                                           'genre'  electronic-unsorted
                                        'filesize'  6037911
                                           'mtime'  1636473330
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 2001 good mood, bad mood 10 electronic unsorted
                                      'tag_artist'  Soft Serve
                                     'tag_release'  Good Mood, Bad Mood
                                       'tag_title'  a cockroach for leopold
                                             'bpm'  132.4
                                    'search_title'  'a':1 'cockroach':2 'for':3 'leopold':4
                                   'search_artist'  'serve':2 'soft':1
                                  'search_release'  'bad':4 'good':1 'mood':2,3
                                     'search_rest'  '2001':1 'bad':5 'electronic':6 'good':2 'mood':3,4 'unsorted':7
                                    'search_combo'  '2001':11 'a':1A 'bad':10C,15 'cockroach':2A 'electronic':16 'for':3A 'good':7C,12 'leopold':4A 'mood':8C,9C,13,14 'serve':6B 'soft':5B 'unsorted':17
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  11A
                                           '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-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['33', '5432fun']
                                        'tag_date'  2001
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636473330.0817888  (2021-11-09 16:55:30)
                             'size'  6037911