======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '306'
                                          'artist'  'Bob Dylan'
                                     'text_people'  ''
                                         'release'  'The Bootleg Series, Vol. 1'
                                           'title'  'Moonshiner'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
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 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '19'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '138.607'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Bootleg Series, Vol. 1'
'TBPM' (BPM (beats per minute))                     '138.607'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Moonshiner'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Dylan'
'TRCK' (Track number/Position in set)               '19'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.62 dB'
'TXXX:replaygain_track_peak'                        '0.546014'

========================== row from database ==========================
                                              'id'  1422764
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Bob Dylan/19 Moonshiner.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  306
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  7363613
                                           'mtime'  1636400720
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 19 ifs songwriter folk
                                      'tag_artist'  Bob Dylan
                                     'tag_release'  The Bootleg Series, Vol. 1
                                       'tag_title'  Moonshiner
                                             'bpm'  138.607
                                    'search_title'  'moonshiner':1
                                   'search_artist'  'bob':1 'dylan':2
                                  'search_release'  '1':7 'bootleg':2 'series':3,4 'the':1 'vol':5,6
                                     'search_rest'  '00singer':1 '19':4 'eos':3 'folk':6 'ifs':5 'songwriter':2
                                    'search_combo'  '00singer':11 '1':10C '19':14 'bob':2B 'bootleg':5C 'dylan':3B 'eos':13 'folk':16 'ifs':15 'moonshiner':1A 'series':6C,7C 'songwriter':12 'the':4C 'vol':8C,9C
                                    'tag_tracknum'  19
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636400720.3435416  (2021-11-08 20:45:20)
                             'size'  7363613