======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '160'
                                          'artist'  'Édith Piaf'
                                     'text_people'  ''
                                         'release'  'La Vie En Rose'
                                           'title'  'Le roi a fait battre tambour'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['chanson francaise', 'jazz', 'chanson', 'female vocalists', 'french']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '138.9'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'La Vie En Rose'
'TBPM' (BPM (beats per minute))                     '138.9'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Le roi a fait battre tambour'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Édith Piaf'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['chanson francaise', 'jazz', 'chanson', 'female vocalists', 'french']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.21 dB'
'TXXX:replaygain_track_peak'                        '0.575972'

========================== row from database ==========================
                                              'id'  1214166
                                            'path'  /data/Music/Bulk/00instruments-classical/Edith Piaf/La Vie En Rose/06 - Le roi a fait battre tambour.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  160
                                           'genre'  loc-eur-france
                                        'filesize'  2578062
                                           'mtime'  1620533949
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical Edith 06 loc eur france
                                      'tag_artist'  Édith Piaf
                                     'tag_release'  La Vie En Rose
                                       'tag_title'  Le roi a fait battre tambour
                                             'bpm'  138.9
                                    'search_title'  'a':3 'battre':5 'fait':4 'le':1 'roi':2 'tambour':6
                                   'search_artist'  'edith':1,2 'piaf':3
                                  'search_release'  'en':3 'la':1 'rose':4 'vie':2
                                     'search_rest'  '00instruments':1 'classical':2 'edith':3 'eur':5 'france':6 'loc':4
                                    'search_combo'  '00instruments':14 'a':3A 'battre':5A 'classical':15 'edith':7B,8B,16 'en':12C 'eur':18 'fait':4A 'france':19 'la':10C 'le':1A 'loc':17 'piaf':9B 'roi':2A 'rose':13C 'tambour':6A 'vie':11C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['chanson francaise', 'jazz', 'chanson', 'female vocalists', 'french']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620533948.7362154  (2021-05-09 06:19:08)
                             'size'  2578062