======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '300'
                                          'artist'  'AfroCubism'
                                     'text_people'  ''
                                         'release'  'AfroCubism'
                                           'title'  'Al vaivin de mi carreta'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-OLDST-2', 'Q-JZFKS-1', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['world', 'cuba', 'mali', 'world music', 'african']"
                                     'discogstags'  "['afro-cuban', 'latin', 'folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '14'
                                            'date'  '2010'
                                        'comments'  ''
                                           'genre'  'loc-islands-cuba'
                                             'bpm'  '97.600'
                                             'key'  '10B'
                                        'acoustid'  'ee0aca4c-1347-4a3b-a27c-4604dd1326be'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000941 000009C7 00004DCA'
'COMM:iTunNORM:eng'                                 (' 00000941 000009C7 00004DCA 00004412 00044DF0 00044853 000079B2 00007A84 '
 '0003FC82 00043DB6')
'COMM:iTunPGAP:eng'                                 '0/'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000930 0000000000C9FB40 00000000 00B71D8D 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'AfroCubism'
'TBPM' (BPM (beats per minute))                     '97.600'
'TCON' (Content type, a.k.a. Genre)                 'loc-islands-cuba'
'TDOR' (Original release time)                      '2010'
'TDRC' (Recording time)                             '2010-10-11'
'TENC' (Encoded by)                                 'iTunes 9.2.1'
'TIT2' (Title/songname/content description)         'Al vaivin de mi carreta'
'TKEY' (Initial key)                                '10B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'AfroCubism'
'TPE2' (Band/orchestra/accompaniment)               'AfroCubism'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'World Circuit'
'TRCK' (Track number/Position in set)               '2/14'
'TSO2'                                              'AfroCubism'
'TSOP' (Performer sort order)                       'AfroCubism'
'TSRC' (ISRC (international standard recording code))  'GBBGU1085002'
'TXXX:ASIN'                                         'B0040GIZOS'
'TXXX:Acoustid Id'                                  'ee0aca4c-1347-4a3b-a27c-4604dd1326be'
'TXXX:BARCODE'                                      '769233008527'
'TXXX:CATALOGNUMBER'                                'WCD085'
'TXXX:MusicBrainz Album Artist Id'                  '05d4916a-7a49-4e51-adf9-f80fe3f8bba0'
'TXXX:MusicBrainz Album Id'                         '20d0c28d-f6a9-4e26-a676-66ad9d4eeb17'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '05d4916a-7a49-4e51-adf9-f80fe3f8bba0'
'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:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['afro-cuban', 'latin', 'folk, world, & country']
'TXXX:involved people'                              'talking drum'
'TXXX:lastfmtags'                                   ['world', 'cuba', 'mali', 'world music', 'african']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.80 dB'
'TXXX:replaygain_track_peak'                        '0.402312'

========================== row from database ==========================
                                              'id'  1397206
                                            'path'  /data/Music/Bulk/00localcharacter/00islands/AfroCubism - Afrocubism [World Circuit] (2010)/02 Al Vaivén De Mi Carreta.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  300
                                           'genre'  loc-islands-cuba
                                        'filesize'  12062720
                                           'mtime'  1620534833
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00islands Afrocubism [World Circuit] (2010) 02 Vaivén De Mi Carreta loc islands cuba
                                      'tag_artist'  AfroCubism
                                     'tag_release'  AfroCubism
                                       'tag_title'  Al vaivin de mi carreta
                                             'bpm'  97.6
                                    'search_title'  'al':1 'carreta':5 'de':3 'mi':4 'vaivin':2
                                   'search_artist'  'afro':2 'afrocubism':1 'cubism':3
                                  'search_release'  'afro':2 'afrocubism':1 'cubism':3
                                     'search_rest'  '00islands':1 '2010':7,8 'afrocubism':2 'carreta':13 'circuit':5,6 'cuba':16 'de':11 'islands':15 'loc':14 'mi':12 'vaiven':9,10 'world':3,4
                                    'search_combo'  '00islands':12 '2010':18,19 'afro':7B,10C 'afrocubism':6B,9C,13 'al':1A 'carreta':5A,24 'circuit':16,17 'cuba':27 'cubism':8B,11C 'de':3A,22 'islands':26 'loc':25 'mi':4A,23 'vaiven':20,21 'vaivin':2A 'world':14,15
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  10B
                                           '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-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['world', 'cuba', 'mali', 'world music', 'african']
                                        'tag_date'  2010
                                     'discogstags'  ['afro-cuban', 'latin', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620534832.526443  (2021-05-09 06:33:52)
                             'size'  12062720