======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '170'
                                          'artist'  'Placido Domingo-Paloma San Basilio'
                                     'text_people'  ''
                                         'release'  'french tanguerooo'
                                           'title'  'Los Nardos'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'loc-eur-france'
                                             'bpm'  '125.393'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'french tanguerooo'
'TBPM' (BPM (beats per minute))                     '125.393'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-france'
'TDRC' (Recording time)                             '1991'
'TENC' (Encoded by)                                 'FrenchTanguero'
'TIT2' (Title/songname/content description)         'Los Nardos'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Placido Domingo-Paloma San Basilio'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.79 dB'
'TXXX:replaygain_track_peak'                        '0.707098'

========================== row from database ==========================
                                              'id'  926422
                                            'path'  /data/Music/Bulk/00localcharacter/french tanguerooo/plácido domingo-paloma san basilio - los nardos.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  170
                                           'genre'  loc-eur-france
                                        'filesize'  2723712
                                           'mtime'  1620536292
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter plácido domingo paloma san basilio los nardos loc eur france
                                      'tag_artist'  Placido Domingo-Paloma San Basilio
                                     'tag_release'  french tanguerooo
                                       'tag_title'  Los Nardos
                                             'bpm'  125.393
                                    'search_title'  'los':1 'nardos':2
                                   'search_artist'  'basilio':6 'domingo':2 'domingopaloma':4 'paloma':3 'placido':1 'san':5
                                  'search_release'  'french':1 'tanguerooo':2
                                     'search_rest'  'basilio':6 'domingo':3 'eur':10 'france':11 'loc':9 'los':7 'nardos':8 'paloma':4 'placido':1,2 'san':5
                                    'search_combo'  'basilio':8B,16 'domingo':4B,13 'domingopaloma':6B 'eur':20 'france':21 'french':9C 'loc':19 'los':1A,17 'nardos':2A,18 'paloma':5B,14 'placido':3B,11,12 'san':7B,15 'tanguerooo':10C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620536291.544016  (2021-05-09 06:58:11)
                             'size'  2723712