======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '168'
                                          'artist'  'Frankie Lymon & The Teenagers'
                                     'text_people'  ''
                                         'release'  "The Rock 'N' Roll Era - Street Corner Serenade II"
                                           'title'  'I Promise to Remember'
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['doo wop', 'oldies', '50s', 'rock n roll', 'soul', 'rhythm and blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '312'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '98.790'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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'TALB' (Album/Movie/Show title)                     "The Rock 'N' Roll Era - Street Corner Serenade II"
'TBPM' (BPM (beats per minute))                     '98.790'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'I Promise to Remember'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '168411'
'TPE1' (Lead performer(s)/Soloist(s))               'Frankie Lymon & The Teenagers'
'TRCK' (Track number/Position in set)               '312'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['doo wop', 'oldies', '50s', 'rock n roll', 'soul', 'rhythm and blues']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.34 dB'
'TXXX:replaygain_track_peak'                        '0.565183'

========================== row from database ==========================
                                              'id'  1440516
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-312 - Frankie Lymon & The Teenagers - I Promise to Remember.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  168
                                           'genre'  prerock-unsorted
                                        'filesize'  6739084
                                           'mtime'  1620387594
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 312 prerock unsorted
                                      'tag_artist'  Frankie Lymon & The Teenagers
                                     'tag_release'  The Rock 'N' Roll Era - Street Corner Serenade II
                                       'tag_title'  I Promise to Remember
                                             'bpm'  98.79
                                    'search_title'  'i':1 'promise':2 'remember':4 'to':3
                                   'search_artist'  'frankie':1 'lymon':2 'teenagers':4 'the':3
                                  'search_release'  'corner':8 'era':6 'ii':10 'n':3,4 'rock':2 'roll':5 'serenade':9 'street':7 'the':1
                                     'search_rest'  '00oldiepop':5 '1956':6 '312':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':23 '1956':24 '312':25 'corner':16C 'country':22 'era':14C 'exotica':20 'frankie':5B 'i':1A 'ii':18C 'jazz':19 'lymon':6B 'n':11C,12C 'oldies':21 'prerock':26 'promise':2A 'remember':4A 'rock':10C 'roll':13C 'serenade':17C 'street':15C 'teenagers':8B 'the':7B,9C 'to':3A 'unsorted':27
                                    'tag_tracknum'  312
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-2', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['doo wop', 'oldies', '50s', 'rock n roll', 'soul', 'rhythm and blues']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620387593.9862576  (2021-05-07 13:39:53)
                             'size'  6739084