======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '177'
                                          'artist'  'The Beatles'
                                     'text_people'  ''
                                         'release'  'Revolver'
                                           'title'  'Tomorrow Never Knows'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-3', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['pop', 'rock', '60s', 'british', 'classic rock']"
                                     'discogstags'  "['rock', 'pop', 'pop rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  '1966'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '127.204'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

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'COMM:iTunNORM:eng'                                 (' 00000375 00000336 000009F8 00000999 00009C6E 00004E4E 000026E4 0000254E '
 '0000EA60 00015FBE')
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'TALB' (Album/Movie/Show title)                     'Revolver'
'TBPM' (BPM (beats per minute))                     '127.204'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '1966'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Tomorrow Never Knows'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Beatles'
'TPE2' (Band/orchestra/accompaniment)               'The Beatles'
'TPUB' (Publisher)                                  'Parlophone'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'pop', 'pop rock']
'TXXX:lastfmtags'                                   ['pop', 'rock', '60s', 'british', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.13 dB'
'TXXX:replaygain_track_peak'                        '0.366130'

========================== row from database ==========================
                                              'id'  769855
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Beatles - TOMORROW NEVER KNOWS.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  177
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  4262139
                                           'mtime'  1620527853
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism TOMORROW NEVER KNOWS hip hop rnb rap turntablism
                                      'tag_artist'  The Beatles
                                     'tag_release'  Revolver
                                       'tag_title'  Tomorrow Never Knows
                                             'bpm'  127.204
                                    'search_title'  'knows':3 'never':2 'tomorrow':1
                                   'search_artist'  'beatles':2 'the':1
                                  'search_release'  'revolver':1
                                     'search_rest'  'hip':8 'hiphop':1 'hop':9 'knows':7 'never':6 'rap':2 'rnb':3 'tomorrow':5 'turntablism':4
                                    'search_combo'  'beatles':5B 'hip':14 'hiphop':7 'hop':15 'knows':3A,13 'never':2A,12 'rap':8 'revolver':6C 'rnb':9 'the':4B 'tomorrow':1A,11 'turntablism':10
                                    'tag_tracknum'  14
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['pop', 'rock', '60s', 'british', 'classic rock']
                                        'tag_date'  1966
                                     'discogstags'  ['rock', 'pop', 'pop rock']

============================== file details ==============================
                                           'mtime'  1620527853.1075678  (2021-05-09 04:37:33)
                             'size'  4262139