======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '212'
                                          'artist'  'T. Rex'
                                     'text_people'  ''
                                         'release'  'The Slider'
                                           'title'  'Buick Mackane'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['glam', 'rock', 'classic rock', '70s', 'glam rock']"
                                     'discogstags'  "['glam', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '119.3'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Slider'
'TBPM' (BPM (beats per minute))                     '119.3'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1972'
'TIT2' (Title/songname/content description)         'Buick Mackane'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'T. Rex'
'TRCK' (Track number/Position in set)               '07'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '3'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['glam', 'rock']
'TXXX:lastfmtags'                                   ['glam', 'rock', 'classic rock', '70s', 'glam rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-9.73 dB'
'TXXX:replaygain_track_peak'                        '1.011736'

========================== row from database ==========================
                                              'id'  1477947
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/(1972) the slider/T. Rex - 07 - Buick Mackane.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  212
                                           'genre'  rock-cppex
                                        'filesize'  8817250
                                           'mtime'  1636400037
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy (1972) the slider 07 rock cppex
                                      'tag_artist'  T. Rex
                                     'tag_release'  The Slider
                                       'tag_title'  Buick Mackane
                                             'bpm'  119.3
                                    'search_title'  'buick':1 'mackane':2
                                   'search_artist'  'rex':3 't':1,2
                                  'search_release'  'slider':2 'the':1
                                     'search_rest'  '1972':2,3 'classicprogpsy':1 'cppex':7 'rock':6 'slider':5 'the':4
                                    'search_combo'  '1972':9,10 'buick':1A 'classicprogpsy':8 'cppex':14 'mackane':2A 'rex':5B 'rock':13 'slider':7C,12 't':3B,4B 'the':6C,11
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-3', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['glam', 'rock', 'classic rock', '70s', 'glam rock']
                                        'tag_date'  1972
                                     'discogstags'  ['glam', 'rock']

============================== file details ==============================
                                           'mtime'  1636400036.9332662  (2021-11-08 20:33:56)
                             'size'  8817250