======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '347'
                                          'artist'  'Bob Dylan'
                                     'text_people'  ''
                                         'release'  "The Times They Are A-Changin'"
                                           'title'  'The Lonesome Death Of Hattie'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', 'Q-JZFKS-1', "
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                                      'lastfmtags'  "['folk rock', 'rock', 'classic rock', 'folk', 'singer songwriter']"
                                     'discogstags'  "['folk, world, & country', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1964'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk'
                                             'bpm'  '137.013'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunNORM:eng'                                 (' 000001A7 0000021D 00000C53 00001414 0003348F 0003348F 00002A33 000032FC '
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'TALB' (Album/Movie/Show title)                     "The Times They Are A-Changin'"
'TBPM' (BPM (beats per minute))                     '137.013'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-folk'
'TDRC' (Recording time)                             '1964'
'TIT2' (Title/songname/content description)         'The Lonesome Death Of Hattie'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Dylan'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['folk, world, & country', 'folk']
'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'                        '+1.86 dB'
'TXXX:replaygain_track_peak'                        '0.636612'

========================== row from database ==========================
                                              'id'  1526221
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Bob Dylan/1964 - The Times They Are A-Changin_/09 The Lonesome Death Of Hattie Carroll.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  347
                                           'genre'  ifs-songwriter-folk
                                        'filesize'  8330763
                                           'mtime'  1636400721
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1964 Changin_ 09 Carroll ifs songwriter folk
                                      'tag_artist'  Bob Dylan
                                     'tag_release'  The Times They Are A-Changin'
                                       'tag_title'  The Lonesome Death Of Hattie
                                             'bpm'  137.013
                                    'search_title'  'death':3 'hattie':5 'lonesome':2 'of':4 'the':1
                                   'search_artist'  'bob':1 'dylan':2
                                  'search_release'  'a':5 'achangin':7 'are':4 'changin':6 'the':1 'they':3 'times':2
                                     'search_rest'  '00singer':1 '1964':4 'carroll':6 'changin':5 'eos':3 'folk':8 'ifs':7 'songwriter':2
                                    'search_combo'  '00singer':15 '1964':18 'a':12C 'achangin':14C 'are':11C 'bob':6B 'carroll':20 'changin':13C,19 'death':3A 'dylan':7B 'eos':17 'folk':22 'hattie':5A 'ifs':21 'lonesome':2A 'of':4A 'songwriter':16 'the':1A,8C 'they':10C 'times':9C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', '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'  1964
                                     'discogstags'  ['folk, world, & country', 'folk']

============================== file details ==============================
                                           'mtime'  1636400720.9580941  (2021-11-08 20:45:20)
                             'size'  8330763