======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '166'
                                          'artist'  'Special Recordings Inc'
                                     'text_people'  ''
                                         'release'  'Background Music 123'
                                           'title'  'lullaby and good shopping'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-UNU-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'soundtrack-library'
                                             'bpm'  '140.3'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Background Music 123'
'TBPM' (BPM (beats per minute))                     '140.3'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-library'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'lullaby and good shopping'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Special Recordings Inc'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   'easy listening'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.99 dB'
'TXXX:replaygain_track_peak'                        '0.993494'

========================== row from database ==========================
                                              'id'  1260772
                                            'path'  /data/Music/Bulk/0soundtrack/Special Recordings Inc - oddio_kresge1/Kresge Stores - 07.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  166
                                           'genre'  soundtrack-library
                                        'filesize'  3322731
                                           'mtime'  1636911590
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack oddio_kresge1 Kresge Stores 07 soundtrack library
                                      'tag_artist'  Special Recordings Inc
                                     'tag_release'  Background Music 123
                                       'tag_title'  lullaby and good shopping
                                             'bpm'  140.3
                                    'search_title'  'and':2 'good':3 'lullaby':1 'shopping':4
                                   'search_artist'  'inc':3 'recordings':2 'special':1
                                  'search_release'  '123':3 'background':1 'music':2
                                     'search_rest'  '0soundtrack':1 'kresge':4 'kresge1':3 'library':7 'oddio':2 'soundtrack':6 'stores':5
                                    'search_combo'  '0soundtrack':11 '123':10C 'and':2A 'background':8C 'good':3A 'inc':7B 'kresge':14 'kresge1':13 'library':17 'lullaby':1A 'music':9C 'oddio':12 'recordings':6B 'shopping':4A 'soundtrack':16 'special':5B 'stores':15
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['easy listening']
                                        'tag_date'  1960
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636911589.6204798  (2021-11-14 18:39:49)
                             'size'  3322731