======================== unified (from filesystem) ========================
                                         'bitrate'  '200.159'
                                        'duration'  '224'
                                          'artist'  'The Dodos'
                                     'text_people'  ''
                                         'release'  'Beware of The Maniacs'
                                           'title'  'Bob'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
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                                      'lastfmtags'  "['indie', 'acoustic', 'indie folk', 'folk', 'indie pop']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-indie'
                                             'bpm'  '86.994'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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'TALB' (Album/Movie/Show title)                     'Beware of The Maniacs'
'TBPM' (BPM (beats per minute))                     '86.994'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-indie'
'TDRC' (Recording time)                             '2006'
'TIT2' (Title/songname/content description)         'Bob'
'TKEY' (Initial key)                                '5B'
'TLEN' (Length)                                     '224000'
'TPE1' (Lead performer(s)/Soloist(s))               'The Dodos'
'TPE2' (Band/orchestra/accompaniment)               'The Dodos'
'TPUB' (Publisher)                                  'The Dodos'
'TRCK' (Track number/Position in set)               '8'
'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:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'indie folk', 'folk', 'indie pop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.62 dB'
'TXXX:replaygain_track_peak'                        '0.495174'

========================== row from database ==========================
                                              'id'  1269923
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/The Dodos/Beware Of The Maniacs/08 - bob.mp3
                                         'working'  None
                                         'bitrate'  200
                                    'duration_sec'  224
                                           'genre'  ifs-songwriter-indie
                                        'filesize'  5668549
                                           'mtime'  1621489527
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos Of 08 bob ifs songwriter indie
                                      'tag_artist'  The Dodos
                                     'tag_release'  Beware of The Maniacs
                                       'tag_title'  Bob
                                             'bpm'  86.994
                                    'search_title'  'bob':1
                                   'search_artist'  'dodos':2 'the':1
                                  'search_release'  'beware':1 'maniacs':4 'of':2 'the':3
                                     'search_rest'  '00singer':1 'bob':5 'eos':3 'ifs':6 'indie':7 'of':4 'songwriter':2
                                    'search_combo'  '00singer':8 'beware':4C 'bob':1A,12 'dodos':3B 'eos':10 'ifs':13 'indie':14 'maniacs':7C 'of':5C,11 'songwriter':9 'the':2B,6C
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'indie folk', 'folk', 'indie pop']
                                        'tag_date'  2006
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621489526.6075342  (2021-05-20 07:45:26)
                             'size'  5668549