======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '88'
                                          'artist'  'Inuit'
                                     'text_people'  ''
                                         'release'  'Canada Inuit Games and Songs'
                                           'title'  'Katajjait on "Hamma", 1:29 '
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-2', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-1', "
 "'q-chart-1', 'q-drums-2', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['traditional', 'british', 'post rock', 'experimental', 'americana']"
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-northpole'
                                             'bpm'  '121.628'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Canada Inuit Games and Songs'
'TBPM' (BPM (beats per minute))                     '121.628'
'TCON' (Content type, a.k.a. Genre)                 'loc-northpole'
'TIT2' (Title/songname/content description)         'Katajjait on "Hamma", 1:29 '
'TKEY' (Initial key)                                '11B'
'TLEN' (Length)                                     '88000'
'TPE1' (Lead performer(s)/Soloist(s))               'Inuit'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:lastfmtags'                                   ['traditional', 'british', 'post rock', 'experimental', 'americana']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.69 dB'
'TXXX:replaygain_track_peak'                        '0.661438'

========================== row from database ==========================
                                              'id'  1510028
                                            'path'  /data/Music/Bulk/00localcharacter/00americas/Canada Inuit Games and Songs (UbuWeb)/mp3 [192k]/2. Katajjait on __Hamma__.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  88
                                           'genre'  loc-northpole
                                        'filesize'  2125696
                                           'mtime'  1637933296
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00americas (UbuWeb) mp3 [192k] 2. __Hamma__ loc northpole
                                      'tag_artist'  Inuit
                                     'tag_release'  Canada Inuit Games and Songs
                                       'tag_title'  Katajjait on "Hamma", 1:29 
                                             'bpm'  121.628
                                    'search_title'  '1':5 '129':7 '29':6 'hamma':3,4 'katajjait':1 'on':2
                                   'search_artist'  'inuit':1
                                  'search_release'  'and':4 'canada':1 'games':3 'inuit':2 'songs':5
                                     'search_rest'  '00americas':1 '192k':5,6 '2':7,8 'hamma':9 'loc':10 'mp3':4 'northpole':11 'ubu':12,13 'ubuweb':2,3 'web':14,15
                                    'search_combo'  '00americas':14 '1':5A '129':7A '192k':18,19 '2':20,21 '29':6A 'and':12C 'canada':9C 'games':11C 'hamma':3A,4A,22 'inuit':8B,10C 'katajjait':1A 'loc':23 'mp3':17 'northpole':24 'on':2A 'songs':13C 'ubu':25,26 'ubuweb':15,16 'web':27,28
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['traditional', 'british', 'post rock', 'experimental', 'americana']
                                        'tag_date'  
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1637933295.7235456  (2021-11-26 14:28:15)
                             'size'  2125696