======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '360'
                                          'artist'  'Stack Waddy'
                                     'text_people'  ''
                                         'release'  'Bugger Off!'
                                           'title'  'Several Years (Foxtrot)'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-1', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['blues rock', 'proto metal', 'hard rock', 'psychedelic rock', 'early metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '103.7'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Bugger Off!'
'TBPM' (BPM (beats per minute))                     '103.7'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         'Several Years (Foxtrot)'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Stack Waddy'
'TPE2' (Band/orchestra/accompaniment)               'Stack Waddy'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'See For Miles'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '1'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['blues rock', 'proto metal', 'hard rock', 'psychedelic rock', 'early metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-4.10 dB'
'TXXX:replaygain_track_peak'                        '0.951076'

========================== row from database ==========================
                                              'id'  1478275
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Stack Waddy - [1972] Bugger Off!/05 - several years (foxtrot).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  360
                                           'genre'  rock-cppex
                                        'filesize'  5769467
                                           'mtime'  1636921796
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy [1972] 05 several years (foxtrot) rock cppex
                                      'tag_artist'  Stack Waddy
                                     'tag_release'  Bugger Off!
                                       'tag_title'  Several Years (Foxtrot)
                                             'bpm'  103.7
                                    'search_title'  'foxtrot':3,4 'several':1 'years':2
                                   'search_artist'  'stack':1 'waddy':2
                                  'search_release'  'bugger':1 'off':2
                                     'search_rest'  '1972':2,3 'classicprogpsy':1 'cppex':9 'foxtrot':6,7 'rock':8 'several':4 'years':5
                                    'search_combo'  '1972':10,11 'bugger':7C 'classicprogpsy':9 'cppex':17 'foxtrot':3A,4A,14,15 'off':8C 'rock':16 'several':1A,12 'stack':5B 'waddy':6B 'years':2A,13
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  12B
                                           '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-1', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['blues rock', 'proto metal', 'hard rock', 'psychedelic rock', 'early metal']
                                        'tag_date'  1971
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636921796.3974822  (2021-11-14 21:29:56)
                             'size'  5769467