======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '203'
                                          'artist'  'Silvio Rodriguez'
                                     'text_people'  'Silvio Rodríguez'
                                         'release'  'The Global Sounds of Hannibal Records'
                                           'title'  'como esperando abril'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['trova', 'cuba', 'nueva trova', 'cantautor', 'singer-songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'loc-unsorted-mix'
                                             'bpm'  '94.239'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:WM/WMCollectionGroupID:ÉÆ\x80Iök\x1cI\x8cá¡ðÛ\x0fX"'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xc9\xc6\x80I\xf6k\x1cI\x8c\xe1\xa1\xf0\xdb\x0fX"')
'PRIV:WM/WMCollectionID:ÉÆ\x80Iök\x1cI\x8cá¡ðÛ\x0fX"'  PRIV(owner='WM/WMCollectionID', data=b'\xc9\xc6\x80I\xf6k\x1cI\x8c\xe1\xa1\xf0\xdb\x0fX"')
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'TALB' (Album/Movie/Show title)                     'The Global Sounds of Hannibal Records'
'TBPM' (BPM (beats per minute))                     '94.239'
'TCOM' (Composer)                                   'Silvio Rodríguez'
'TCON' (Content type, a.k.a. Genre)                 'loc-unsorted-mix'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'como esperando abril'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Silvio Rodriguez'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Virgin'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['trova', 'cuba', 'nueva trova', 'cantautor', 'singer-songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '-0.26 dB'
'TXXX:replaygain_track_peak'                        '0.716183'

========================== row from database ==========================
                                              'id'  472957
                                            'path'  /data/Music/Bulk/00localcharacter/VA. World 1： Trad/The Global Sounds Of Hannibal Records (LaFolieDuJour, 2010) [VBR]/06 SILVIO RODRIGUEZ - como esperando abril.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  203
                                           'genre'  loc-unsorted-mix
                                        'filesize'  4888083
                                           'mtime'  1621629895
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter VA. World 1： Trad Of (LaFolieDuJour, 2010) [VBR] 06 SILVIO RODRIGUEZ loc unsorted mix
                                      'tag_artist'  Silvio Rodriguez
                                     'tag_release'  The Global Sounds of Hannibal Records
                                       'tag_title'  como esperando abril
                                             'bpm'  94.239
                                    'search_title'  'abril':3 'como':1 'esperando':2
                                   'search_artist'  'rodriguez':2 'silvio':1
                                  'search_release'  'global':2 'hannibal':5 'of':4 'records':6 'sounds':3 'the':1
                                     'search_rest'  '1':4,5,6 '2010':11,12 'du':23 'folie':22 'jour':24,25 'la':20,21 'lafoliedujour':9,10 'loc':17 'mix':19 'of':8 'rodriguez':16 'silvio':15 'trad':7 'unsorted':18 'va':1,2 'vbr':13,14 'world':3
                                    'search_combo'  '1':15,16,17 '2010':22,23 'abril':3A 'como':1A 'du':34 'esperando':2A 'folie':33 'global':7C 'hannibal':10C 'jour':35,36 'la':31,32 'lafoliedujour':20,21 'loc':28 'mix':30 'of':9C,19 'records':11C 'rodriguez':5B,27 'silvio':4B,26 'sounds':8C 'the':6C 'trad':18 'unsorted':29 'va':12,13 'vbr':24,25 'world':14
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['trova', 'cuba', 'nueva trova', 'cantautor', 'singer-songwriter']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621629894.9378293  (2021-05-21 22:44:54)
                             'size'  4888083