======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '72'
                                          'artist'  'Franck Alamo'
                                     'text_people'  ''
                                         'release'  'Nanarland Radioblog'
                                           'title'  'Copain Coplan'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-2', 'q-syn-2', 'q-bass-1', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-1', 'q-drums-3', 'q-other-1', "
 "'q-piano-1', 'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['all', 'pop', 'french', '60s', 'cover']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'soundtrack-web'
                                             'bpm'  '121.8'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Nanarland Radioblog'
'TBPM' (BPM (beats per minute))                     '121.8'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-web'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Copain Coplan'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Franck Alamo'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['all', 'pop', 'french', '60s', 'cover']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.87 dB'
'TXXX:replaygain_track_peak'                        '0.306766'

========================== row from database ==========================
                                              'id'  1368416
                                            'path'  /data/Music/Bulk/0soundtrack/Nanarland Radioblog/Coplan_Agent_Secret_FX18_Copain_Coplan_(Franck_Alamo).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  72
                                           'genre'  soundtrack-web
                                        'filesize'  1160408
                                           'mtime'  1620329140
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Coplan_Agent_Secret_FX18_Copain_Coplan_(Franck_Alamo) soundtrack web
                                      'tag_artist'  Franck Alamo
                                     'tag_release'  Nanarland Radioblog
                                       'tag_title'  Copain Coplan
                                             'bpm'  121.8
                                    'search_title'  'copain':1 'coplan':2
                                   'search_artist'  'alamo':2 'franck':1
                                  'search_release'  'nanarland':1 'radioblog':2
                                     'search_rest'  '0soundtrack':1 'agent':3,11 'alamo':9,17 'copain':6,14 'coplan':2,7,10,15 'franck':8,16 'fx18':5,13 'secret':4,12 'soundtrack':18 'web':19
                                    'search_combo'  '0soundtrack':7 'agent':9,17 'alamo':4B,15,23 'copain':1A,12,20 'coplan':2A,8,13,16,21 'franck':3B,14,22 'fx18':11,19 'nanarland':5C 'radioblog':6C 'secret':10,18 'soundtrack':24 'web':25
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-1', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['all', 'pop', 'french', '60s', 'cover']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620329139.9748733  (2021-05-06 21:25:39)
                             'size'  1160408