======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '252'
                                          'artist'  'Iron Maiden vs Bob Marley'
                                     'text_people'  ''
                                         'release'  'Number of Da Boots - The Iron'
                                           'title'  'Exodus Revelations'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2007'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '142.809'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:eng'                            'dimanche 26 août 2007 19:47:'
'TALB' (Album/Movie/Show title)                     'Number of Da Boots - The Iron'
'TBPM' (BPM (beats per minute))                     '142.809'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2007'
'TIT2' (Title/songname/content description)         'Exodus Revelations'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Iron Maiden vs Bob Marley'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.33 dB'
'TXXX:replaygain_track_peak'                        '0.311164'

========================== row from database ==========================
                                              'id'  1391585
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Iron Maiden vs Bob Marley - Iron Maiden/Iron Maiden vs Bob Marley/Number of Da Boots - The Iron Maiden Bootleg Tribute Album__cifsc8f1.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  252
                                           'genre'  eid-metal
                                        'filesize'  10110430
                                           'mtime'  1620300854
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal Bootleg Tribute Album__cifsc8f1 eid metal
                                      'tag_artist'  Iron Maiden vs Bob Marley
                                     'tag_release'  Number of Da Boots - The Iron
                                       'tag_title'  Exodus Revelations
                                             'bpm'  142.809
                                    'search_title'  'exodus':1 'revelations':2
                                   'search_artist'  'bob':4 'iron':1 'maiden':2 'marley':5 'vs':3
                                  'search_release'  'boots':4 'da':3 'iron':6 'number':1 'of':2 'the':5
                                     'search_rest'  '00dwimp':1 '00metal':2 'album':5 'bootleg':3 'cifsc8f1':6 'eid':7 'metal':8 'tribute':4
                                    'search_combo'  '00dwimp':14 '00metal':15 'album':18 'bob':6B 'bootleg':16 'boots':11C 'cifsc8f1':19 'da':10C 'eid':20 'exodus':1A 'iron':3B,13C 'maiden':4B 'marley':7B 'metal':21 'number':8C 'of':9C 'revelations':2A 'the':12C 'tribute':17 'vs':5B
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  []
                                        'tag_date'  2007
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620300854.3270788  (2021-05-06 13:34:14)
                             'size'  10110430