======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '221'
                                          'artist'  'Voltaire'
                                     'text_people'  ''
                                         'release'  'Boo Hoo'
                                           'title'  '#1 Fan'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['dark cabaret', 'alternative', 'gothic', 'folk', 'darkwave']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'set-th-novelty'
                                             'bpm'  '87.558'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Boo Hoo'
'TBPM' (BPM (beats per minute))                     '87.558'
'TCON' (Content type, a.k.a. Genre)                 'set-th-novelty'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         '#1 Fan'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Voltaire'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['dark cabaret', 'alternative', 'gothic', 'folk', 'darkwave']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.12 dB'
'TXXX:replaygain_track_peak'                        '0.558119'

========================== row from database ==========================
                                              'id'  1326437
                                            'path'  /data/Music/Bulk/00poprockelectronic/Voltaire/03 - # 1 Fan.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  221
                                           'genre'  set-th-novelty
                                        'filesize'  4429236
                                           'mtime'  1621695868
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 03 set th novelty
                                      'tag_artist'  Voltaire
                                     'tag_release'  Boo Hoo
                                       'tag_title'  #1 Fan
                                             'bpm'  87.558
                                    'search_title'  '1':1,2 'fan':3
                                   'search_artist'  'voltaire':1
                                  'search_release'  'boo':1 'hoo':2
                                     'search_rest'  '00poprockelectronic':1 'novelty':4 'set':2 'th':3
                                    'search_combo'  '00poprockelectronic':7 '1':1A,2A 'boo':5C 'fan':3A 'hoo':6C 'novelty':10 'set':8 'th':9 'voltaire':4B
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['dark cabaret', 'alternative', 'gothic', 'folk', 'darkwave']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621695868.134607  (2021-05-22 17:04:28)
                             'size'  4429236