======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '200'
                                          'artist'  'Donays'
                                     'text_people'  ''
                                         'release'  'Bob Dylan - Theme Time 14 Devil'
                                           'title'  'Devil in His Heart (W/Bob Dylan Intro)'
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                                      'lastfmtags'  '[\'soul\', "r\'n\'b", \'60s\', \'rhythm and blues\', \'easy listening\']'
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  '18'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '114.414'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunNORM:eng'                                 (' 00000B6B 00000371 00007DB8 00003D91 0001333E 000154EB 000053A6 00005166 '
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'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000B04 000000000086E0EC 00000000 00000000 00000000 '
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'TALB' (Album/Movie/Show title)                     'Bob Dylan - Theme Time 14 Devil'
'TBPM' (BPM (beats per minute))                     '114.414'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TENC' (Encoded by)                                 'iTunes v6.0.5'
'TIT2' (Title/songname/content description)         'Devil in His Heart (W/Bob Dylan Intro)'
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Donays'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '9/18'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soul', "r'n'b", '60s', 'rhythm and blues', 'easy listening']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.91 dB'
'TXXX:replaygain_track_peak'                        '0.332340'

========================== row from database ==========================
                                              'id'  401888
                                            'path'  /data/Music/Bulk/0nonmusic/TTRH-14-Devil/09. Donays - Devil in His Heart (W_Bob Dylan Intro).mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  200
                                           'genre'  set-th-novelty
                                        'filesize'  4012408
                                           'mtime'  1620343500
                                   'redo_metaread'  0
                                        'rest_str'   0nonmusic TTRH 09. (W_Bob set th novelty
                                      'tag_artist'  Donays
                                     'tag_release'  Bob Dylan - Theme Time 14 Devil
                                       'tag_title'  Devil in His Heart (W/Bob Dylan Intro)
                                             'bpm'  114.414
                                    'search_title'  'bob':6 'devil':1 'dylan':8 'heart':4 'his':3 'in':2 'intro':9,10 'w':5 'wbob':7
                                   'search_artist'  'donays':1
                                  'search_release'  'bob':1 'devil':5 'dylan':2 'theme':3 'time':4
                                     'search_rest'  '09':3,4 '0nonmusic':1 'bob':6,8 'novelty':11 'set':9 'th':10 'ttrh':2 'w':5,7
                                    'search_combo'  '09':19,20 '0nonmusic':17 'bob':6A,12C,22,24 'devil':1A,16C 'donays':11B 'dylan':8A,13C 'heart':4A 'his':3A 'in':2A 'intro':9A,10A 'novelty':27 'set':25 'th':26 'theme':14C 'time':15C 'ttrh':18 'w':5A,21,23 'wbob':7A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['soul', "r'n'b", '60s', 'rhythm and blues', 'easy listening']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343500.3854594  (2021-05-07 01:25:00)
                             'size'  4012408