======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '208'
                                          'artist'  'AC/DC'
                                     'text_people'  ''
                                         'release'  'Highway To Hell [Remastered]'
                                           'title'  'Highway To Hell'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['heavy metal', 'rock', 'hard rock', 'metal', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '115.195'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Highway To Hell [Remastered]'
'TBPM' (BPM (beats per minute))                     '115.195'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '2003'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Secure mode)'
'TIT2' (Title/songname/content description)         'Highway To Hell'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'AC/DC'
'TRCK' (Track number/Position in set)               '1'
'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:lastfmtags'                                   ['heavy metal', 'rock', 'hard rock', 'metal', 'classic rock']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.34 dB'
'TXXX:replaygain_track_peak'                        '0.342837'

========================== row from database ==========================
                                              'id'  1410762
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/AC-DC - AC/DC - ACDC/ACDC -  The Best Of @192/ACDC - 05 - Highway To Hell.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  208
                                           'genre'  rock-cppex-classic
                                        'filesize'  5006105
                                           'mtime'  1678553469
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy ACDC ACDC The Best Of @192 ACDC 05 rock cppex classic
                                      'tag_artist'  AC/DC
                                     'tag_release'  Highway To Hell [Remastered]
                                       'tag_title'  Highway To Hell
                                             'bpm'  115.195
                                    'search_title'  'hell':3 'highway':1 'to':2
                                   'search_artist'  'ac':1 'acdc':3 'dc':2
                                  'search_release'  'hell':3 'highway':1 'remastered':4,5 'to':2
                                     'search_rest'  '192':6 'acdc':2 'best':4 'classic':9 'classicprogpsy':1 'cppex':8 'of':5 'rock':7 'the':3
                                    'search_combo'  '192':17 'ac':4B 'acdc':6B,13 'best':15 'classic':20 'classicprogpsy':12 'cppex':19 'dc':5B 'hell':3A,9C 'highway':1A,7C 'of':16 'remastered':10C,11C 'rock':18 'the':14 'to':2A,8C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['heavy metal', 'rock', 'hard rock', 'metal', 'classic rock']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678553469.2976706  (2023-03-11 17:51:09)
                             'size'  5006105