======================== unified (from filesystem) ========================
                                         'bitrate'  '222.519'
                                        'duration'  '189'
                                          'artist'  'London After Midnight'
                                     'text_people'  ''
                                         'release'  'Oddities'
                                           'title'  'A Letter to God (live)'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['gothic rock', 'industrial', 'gothic', 'goth', 'darkwave']"
                                     'discogstags'  "['goth rock', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave'
                                             'bpm'  '87.558'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Oddities'
'TBPM' (BPM (beats per minute))                     '87.558'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'A Letter to God (live)'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'London After Midnight'
'TRCK' (Track number/Position in set)               '8'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['goth rock', 'rock']
'TXXX:lastfmtags'                                   ['gothic rock', 'industrial', 'gothic', 'goth', 'darkwave']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.48 dB'
'TXXX:replaygain_track_peak'                        '0.607201'

========================== row from database ==========================
                                              'id'  1292330
                                            'path'  /data/Music/Bulk/00poprockelectronic/London After Midnight/London After Midnight - Oddities - 08 - A Letter to God (Live).mp3
                                         'working'  None
                                         'bitrate'  222
                                    'duration_sec'  189
                                           'genre'  eid-ebm or industrial or darkwave
                                        'filesize'  5271330
                                           'mtime'  1620296948
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 08 (Live) eid ebm or industrial or darkwave
                                      'tag_artist'  London After Midnight
                                     'tag_release'  Oddities
                                       'tag_title'  A Letter to God (live)
                                             'bpm'  87.558
                                    'search_title'  'a':1 'god':4 'letter':2 'live':5,6 'to':3
                                   'search_artist'  'after':2 'london':1 'midnight':3
                                  'search_release'  'oddities':1
                                     'search_rest'  '00poprockelectronic':1 'darkwave':8 'ebm':5 'eid':4 'industrial':7 'live':2,3 'or':6
                                    'search_combo'  '00poprockelectronic':11 'a':1A 'after':8B 'darkwave':18 'ebm':15 'eid':14 'god':4A 'industrial':17 'letter':2A 'live':5A,6A,12,13 'london':7B 'midnight':9B 'oddities':10C 'or':16 'to':3A
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['gothic rock', 'industrial', 'gothic', 'goth', 'darkwave']
                                        'tag_date'  1998
                                     'discogstags'  ['goth rock', 'rock']

============================== file details ==============================
                                           'mtime'  1620296948.250477  (2021-05-06 12:29:08)
                             'size'  5271330