======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '106'
                                          'artist'  'Ars Cameralis'
                                     'text_people'  ''
                                         'release'  'Gothic Music in Bohemia 13-15th Century'
                                           'title'  'Ductia'
                                           'quals'  ("['Q-HAP-3', 'Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['baroque', '14th century', 'medieval', 'classical', 'early music']"
                                     'discogstags'  "['medieval', 'classical', 'contemporary']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-eur'
                                             'bpm'  '143.7'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Gothic Music in Bohemia 13-15th Century'
'TBPM' (BPM (beats per minute))                     '143.7'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur'
'TIT2' (Title/songname/content description)         'Ductia'
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Ars Cameralis'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['medieval', 'classical', 'contemporary']
'TXXX:lastfmtags'                                   ['baroque', '14th century', 'medieval', 'classical', 'early music']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.45 dB'
'TXXX:replaygain_track_peak'                        '0.928146'

========================== row from database ==========================
                                              'id'  1264736
                                            'path'  /data/Music/Bulk/00localcharacter/New London Consort - Middeleeuws/Ars Cameralis - Ductia.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  106
                                           'genre'  loc-eur
                                        'filesize'  1700832
                                           'mtime'  1620536049
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter New London Consort Middeleeuws loc eur
                                      'tag_artist'  Ars Cameralis
                                     'tag_release'  Gothic Music in Bohemia 13-15th Century
                                       'tag_title'  Ductia
                                             'bpm'  143.7
                                    'search_title'  'ductia':1
                                   'search_artist'  'ars':1 'cameralis':2
                                  'search_release'  '13':5 '1315th':7 '15th':6 'bohemia':4 'century':8 'gothic':1 'in':3 'music':2
                                     'search_rest'  'consort':3 'eur':6 'loc':5 'london':2 'middeleeuws':4 'new':1
                                    'search_combo'  '13':8C '1315th':10C '15th':9C 'ars':2B 'bohemia':7C 'cameralis':3B 'century':11C 'consort':14 'ductia':1A 'eur':17 'gothic':4C 'in':6C 'loc':16 'london':13 'middeleeuws':15 'music':5C 'new':12
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['baroque', '14th century', 'medieval', 'classical', 'early music']
                                        'tag_date'  
                                     'discogstags'  ['medieval', 'classical', 'contemporary']

============================== file details ==============================
                                           'mtime'  1620536048.6362972  (2021-05-09 06:54:08)
                             'size'  1700832