======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '170'
                                          'artist'  'Olivia Ruiz'
                                     'text_people'  ''
                                         'release'  'La femme chocolat'
                                           'title'  'I need a child'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vsstress', 'chanson', 'female vocalists', 'billyboy', 'nuovaaria']"
                                     'discogstags'  "['pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'loc-eur-france;set-pl-sced'
                                             'bpm'  '111.089'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'La femme chocolat'
'TBPM' (BPM (beats per minute))                     '111.089'
'TCON' (Content type, a.k.a. Genre)                 ['loc-eur-france', 'set-pl-sced']
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'I need a child'
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '170501'
'TPE1' (Lead performer(s)/Soloist(s))               'Olivia Ruiz'
'TPE2' (Band/orchestra/accompaniment)               'Olivia Ruiz'
'TRCK' (Track number/Position in set)               '03'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'pop'
'TXXX:lastfmtags'                                   ['vsstress', 'chanson', 'female vocalists', 'billyboy', 'nuovaaria']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.17 dB'
'TXXX:replaygain_track_peak'                        '0.447716'

========================== row from database ==========================
                                              'id'  1397556
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/Olivia Ruiz/[2005] La femme chocolat/03 I need a child.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  170
                                           'genre'  loc-eur-france;set-pl-sced
                                        'filesize'  3458944
                                           'mtime'  1623430519
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe [2005] 03 loc eur france;set pl sced
                                      'tag_artist'  Olivia Ruiz
                                     'tag_release'  La femme chocolat
                                       'tag_title'  I need a child
                                             'bpm'  111.089
                                    'search_title'  'a':3 'child':4 'i':1 'need':2
                                   'search_artist'  'olivia':1 'ruiz':2
                                  'search_release'  'chocolat':3 'femme':2 'la':1
                                     'search_rest'  '00mid':1 '2005':4,5 'eur':7 'europe':3 'france':8,10 'loc':6 'north':2 'pl':12 'sced':13 'set':9,11
                                    'search_combo'  '00mid':10 '2005':13,14 'a':3A 'child':4A 'chocolat':9C 'eur':16 'europe':12 'femme':8C 'france':17,19 'i':1A 'la':7C 'loc':15 'need':2A 'north':11 'olivia':5B 'pl':21 'ruiz':6B 'sced':22 'set':18,20
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', '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-3', 'q-grit-2']
                                      'lastfmtags'  ['vsstress', 'chanson', 'female vocalists', 'billyboy', 'nuovaaria']
                                        'tag_date'  2005
                                     'discogstags'  ['pop']

============================== file details ==============================
                                           'mtime'  1623430518.6683772  (2021-06-11 18:55:18)
                             'size'  3458944