======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '280'
                                          'artist'  'Aerosmith'
                                     'text_people'  ''
                                         'release'  'Best Of'
                                           'title'  'Back In The Saddle'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['hard rock', '80s', 'classic rock', '70s', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '124.087'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Best Of'
'TBPM' (BPM (beats per minute))                     '124.087'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Back In The Saddle'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Aerosmith'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Mp3gain_minmax'                               '083,204'
'TXXX:Mp3gain_undo'                                 '+006,+006,N'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['hard rock', '80s', 'classic rock', '70s', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.57 dB'
'TXXX:replaygain_track_peak'                        '0.443118'

========================== row from database ==========================
                                              'id'  1415845
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Aerosmith/Aerosmith - The Best Of/Aerosmith - 10 - Back In The Saddle.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  280
                                           'genre'  rock-cppex-classic
                                        'filesize'  4497527
                                           'mtime'  1678456070
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy 10 rock cppex classic
                                      'tag_artist'  Aerosmith
                                     'tag_release'  Best Of
                                       'tag_title'  Back In The Saddle
                                             'bpm'  124.087
                                    'search_title'  'back':1 'in':2 'saddle':4 'the':3
                                   'search_artist'  'aerosmith':1
                                  'search_release'  'best':1 'of':2
                                     'search_rest'  'classic':4 'classicprogpsy':1 'cppex':3 'rock':2
                                    'search_combo'  'aerosmith':5B 'back':1A 'best':6C 'classic':11 'classicprogpsy':8 'cppex':10 'in':2A 'of':7C 'rock':9 'saddle':4A 'the':3A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']
                                      'lastfmtags'  ['hard rock', '80s', 'classic rock', '70s', 'rock']
                                        'tag_date'  1980
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1678456069.9211729  (2023-03-10 14:47:49)
                             'size'  4497527