======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '144'
                                          'artist'  'Aretha Franklin'
                                     'text_people'  ''
                                         'release'  'Respect - The Very Best of Aretha Franklin'
                                           'title'  'Respect'
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 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['rhythm and blues', 'blues', 'jazz', 'female vocalists', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '115.722'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'TALB' (Album/Movie/Show title)                     'Respect - The Very Best of Aretha Franklin'
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'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Respect'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Aretha Franklin'
'TPE2' (Band/orchestra/accompaniment)               'Aretha Franklin'
'TPUB' (Publisher)                                  'Warner Bros.'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rhythm and blues', 'blues', 'jazz', 'female vocalists', 'soul']
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'TXXX:q-drums'                                      '3'
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'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.51 dB'
'TXXX:replaygain_track_peak'                        '0.329620'

========================== row from database ==========================
                                              'id'  767301
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Aretha Franklin - RESPECT.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  144
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  4272969
                                           'mtime'  1620586865
                                   'redo_metaread'  0
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                                      'tag_artist'  Aretha Franklin
                                     'tag_release'  Respect - The Very Best of Aretha Franklin
                                       'tag_title'  Respect
                                             'bpm'  115.722
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                                   'search_artist'  'aretha':1 'franklin':2
                                  'search_release'  'aretha':6 'best':4 'franklin':7 'of':5 'respect':1 'the':2 'very':3
                                     'search_rest'  'hip':6 'hiphop':1 'hop':7 'or':8 'rap':2 'respect':5 'rnb':3 'turntablism':4
                                    'search_combo'  'aretha':2B,9C 'best':7C 'franklin':3B,10C 'hip':16 'hiphop':11 'hop':17 'of':8C 'or':18 'rap':12 'respect':1A,4C,15 'rnb':13 'the':5C 'turntablism':14 'very':6C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rhythm and blues', 'blues', 'jazz', 'female vocalists', 'soul']
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586865.3051174  (2021-05-09 21:01:05)
                             'size'  4272969