======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '199'
                                          'artist'  'Lord Jellicoe'
                                     'text_people'  ''
                                         'release'  'Dip & Fall Back - Classic Jamaican Mento (2 of 2)'
                                           'title'  'Big Bamboo'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', 'Q-OLDST-2', "
 "'Q-JZFKS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['zombies']"
                                     'discogstags'  "['reggae', 'calypso']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1964'
                                        'comments'  ''
                                           'genre'  'loc-islands'
                                             'bpm'  '143.517'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Dip & Fall Back - Classic Jamaican Mento (2 of 2)'
'TBPM' (BPM (beats per minute))                     '143.517'
'TCON' (Content type, a.k.a. Genre)                 'loc-islands'
'TDRC' (Recording time)                             '1964'
'TIT2' (Title/songname/content description)         'Big Bamboo'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Lord Jellicoe'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['reggae', 'calypso']
'TXXX:lastfmtags'                                   'zombies'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.09 dB'
'TXXX:replaygain_track_peak'                        '0.341233'

========================== row from database ==========================
                                              'id'  1402471
                                            'path'  /data/Music/Bulk/00localcharacter/00islands/VA - Dip & fall back - classic jamaican mento (2 of 2)/10 - Lord Jellicoe - Big Bamboo.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  199
                                           'genre'  loc-islands
                                        'filesize'  4864015
                                           'mtime'  1620534850
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00islands VA fall back classic jamaican mento 10 loc islands
                                      'tag_artist'  Lord Jellicoe
                                     'tag_release'  Dip & Fall Back - Classic Jamaican Mento (2 of 2)
                                       'tag_title'  Big Bamboo
                                             'bpm'  143.517
                                    'search_title'  'bamboo':2 'big':1
                                   'search_artist'  'jellicoe':2 'lord':1
                                  'search_release'  '2':7,8,10 'back':3 'classic':4 'dip':1 'fall':2 'jamaican':5 'mento':6 'of':9
                                     'search_rest'  '00islands':1 'back':4 'classic':5 'fall':3 'islands':9 'jamaican':6 'loc':8 'mento':7 'va':2
                                    'search_combo'  '00islands':15 '2':11C,12C,14C 'back':7C,18 'bamboo':2A 'big':1A 'classic':8C,19 'dip':5C 'fall':6C,17 'islands':23 'jamaican':9C,20 'jellicoe':4B 'loc':22 'lord':3B 'mento':10C,21 'of':13C 'va':16
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['zombies']
                                        'tag_date'  1964
                                     'discogstags'  ['reggae', 'calypso']

============================== file details ==============================
                                           'mtime'  1620534850.1705341  (2021-05-09 06:34:10)
                             'size'  4864015