======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '344'
                                          'artist'  'Michael Jackson'
                                     'text_people'  'Michael Jackson'
                                         'release'  'HIStory: Past, Present and Future - Book I (Disc 2) HIStory Continues'
                                           'title'  'Stranger In Moscow'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
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 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
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                                      'lastfmtags'  "['80s', 'dance', 'rock', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '130.063'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     'HIStory: Past, Present and Future - Book I (Disc 2) HIStory Continues'
'TBPM' (BPM (beats per minute))                     '130.063'
'TCOM' (Composer)                                   'Michael Jackson'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'Stranger In Moscow'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '344333'
'TPE1' (Lead performer(s)/Soloist(s))               'Michael Jackson'
'TPE2' (Band/orchestra/accompaniment)               'Michael Jackson'
'TPUB' (Publisher)                                  'Epic'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['80s', 'dance', 'rock', 'pop']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.578661'

========================== row from database ==========================
                                              'id'  1318985
                                            'path'  /data/Music/Bulk/00poprockelectronic/Michael Jackson/HIStory_ Past, Present and Future - Book/03 Stranger in Moscow.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  344
                                           'genre'  rock-unsorted
                                        'filesize'  5521408
                                           'mtime'  1621696417
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic HIStory_ 03 rock unsorted
                                      'tag_artist'  Michael Jackson
                                     'tag_release'  HIStory: Past, Present and Future - Book I (Disc 2) HIStory Continues
                                       'tag_title'  Stranger In Moscow
                                             'bpm'  130.063
                                    'search_title'  'in':2 'moscow':3 'stranger':1
                                   'search_artist'  'jackson':2 'michael':1
                                  'search_release'  '2':12,13 'and':6 'book':8 'continues':14 'disc':10,11 'future':7 'history':1,2 'i':9 'past':3,4 'present':5
                                     'search_rest'  '00poprockelectronic':1 'history':2 'rock':3 'unsorted':4
                                    'search_combo'  '00poprockelectronic':20 '2':17C,18C 'and':11C 'book':13C 'continues':19C 'disc':15C,16C 'future':12C 'history':6C,7C,21 'i':14C 'in':2A 'jackson':5B 'michael':4B 'moscow':3A 'past':8C,9C 'present':10C 'rock':22 'stranger':1A 'unsorted':23
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'dance', 'rock', 'pop']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696416.856879  (2021-05-22 17:13:36)
                             'size'  5521408