======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '335'
                                          'artist'  'Forever Slave'
                                     'text_people'  ''
                                         'release'  'Resurrection'
                                           'title'  "Erzebet Bathory's Song"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['female vocalists', 'gothic', 'female fronted metal', 'symphonic metal', "
 "'gothic metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'eid-metal-doom or gothic'
                                             'bpm'  '143.213'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Resurrection'
'TBPM' (BPM (beats per minute))                     '143.213'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-doom or gothic'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         "Erzebet Bathory's Song"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Forever Slave'
'TRCK' (Track number/Position in set)               '2'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['female vocalists',
 'gothic',
 'female fronted metal',
 'symphonic metal',
 'gothic metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.70 dB'
'TXXX:replaygain_track_peak'                        '0.286729'

========================== row from database ==========================
                                              'id'  1391272
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Forever Slave/Forever Slave - Resurrection [2004]/02-Erzebet_Bathorys_Song-FERiCE.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  335
                                           'genre'  eid-metal-doom or gothic
                                        'filesize'  8070153
                                           'mtime'  1620310294
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal [2004] 02 Erzebet_Bathorys_Song FERiCE eid metal doom gothic
                                      'tag_artist'  Forever Slave
                                     'tag_release'  Resurrection
                                       'tag_title'  Erzebet Bathory's Song
                                             'bpm'  143.213
                                    'search_title'  'bathory':2 'bathorys':4 'erzebet':1 's':3 'song':5
                                   'search_artist'  'forever':1 'slave':2
                                  'search_release'  'resurrection':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '2004':3,4 'bathorys':6 'ce':14 'doom':11 'eid':9 'erzebet':5 'feri':13 'ferice':8 'gothic':12 'metal':10 'song':7
                                    'search_combo'  '00dwimp':9 '00metal':10 '2004':11,12 'bathory':2A 'bathorys':4A,14 'ce':22 'doom':19 'eid':17 'erzebet':1A,13 'feri':21 'ferice':16 'forever':6B 'gothic':20 'metal':18 'resurrection':8C 's':3A 'slave':7B 'song':5A,15
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['female vocalists', 'gothic', 'female fronted metal', 'symphonic metal', 'gothic metal']
                                        'tag_date'  2004
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310293.6649754  (2021-05-06 16:11:33)
                             'size'  8070153