======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '283'
                                          'artist'  'Michael Jackson'
                                     'text_people'  ''
                                         'release'  'The Essential Michael Jackson Disc 2'
                                           'title'  "They Don't Care About Us"
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                                      'lastfmtags'  "['80s', 'dance', 'rock', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '89.930'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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'TALB' (Album/Movie/Show title)                     'The Essential Michael Jackson Disc 2'
'TBPM' (BPM (beats per minute))                     '89.930'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         "They Don't Care About Us"
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '284386'
'TPE1' (Lead performer(s)/Soloist(s))               'Michael Jackson'
'TPE2' (Band/orchestra/accompaniment)               'Michael Jackson'
'TPUB' (Publisher)                                  'Epic/Legacy'
'TRCK' (Track number/Position in set)               '16'
'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'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.48 dB'
'TXXX:replaygain_track_peak'                        '0.369129'

========================== row from database ==========================
                                              'id'  1299967
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/056 - Michael Jackson - They dont care about us.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  283
                                           'genre'  rock-unsorted
                                        'filesize'  6818362
                                           'mtime'  1621696014
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 056 dont care about us rock unsorted
                                      'tag_artist'  Michael Jackson
                                     'tag_release'  The Essential Michael Jackson Disc 2
                                       'tag_title'  They Don't Care About Us
                                             'bpm'  89.93
                                    'search_title'  'about':6 'care':5 'don':2 'dont':4 't':3 'they':1 'us':7
                                   'search_artist'  'jackson':2 'michael':1
                                  'search_release'  '2':6 'disc':5 'essential':2 'jackson':4 'michael':3 'the':1
                                     'search_rest'  '00poprockelectronic':1 '90s':2 'about':5 'care':4 'dont':3 'rock':7 'unsorted':8 'us':6
                                    'search_combo'  '00poprockelectronic':16 '2':15C '90s':17 'about':6A,20 'care':5A,19 'disc':14C 'don':2A 'dont':4A,18 'essential':11C 'jackson':9B,13C 'michael':8B,12C 'rock':22 't':3A 'the':10C 'they':1A 'unsorted':23 'us':7A,21
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-4', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['80s', 'dance', 'rock', 'pop']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696014.414951  (2021-05-22 17:06:54)
                             'size'  6818362