======================== unified (from filesystem) ========================
                                         'bitrate'  '237.392'
                                        'duration'  '466'
                                          'artist'  'Type O Negative'
                                     'text_people'  ''
                                         'release'  'Slow, Deep And Hard'
                                           'title'  'Xero Tolerance'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-3', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['metal', 'gothic', 'doom metal', 'gothic rock', 'gothic metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'eid-metal-doom or gothic'
                                             'bpm'  '128.740'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'LAME 3.97 -V 0 --vbr-new'
'COMM:ID3v1 Comment:XXX'                            'LAME 3.97 -V 0 --vbr-new'
'COMM:ID3v1 Comment:eng'                            'LAME 3.97 -V 0 --vbr-new'
'COMM:iTunNORM:eng'                                 (' 000001CA 000001DF 000008A6 00000BD9 00059A9B 0001267D 00007AA7 00007ED6 '
 '00043D08 00043D08')
'TALB' (Album/Movie/Show title)                     'Slow, Deep And Hard'
'TBPM' (BPM (beats per minute))                     '128.740'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-doom or gothic'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Xero Tolerance'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Type O Negative'
'TRCK' (Track number/Position in set)               '3'
'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'                                   ['metal', 'gothic', 'doom metal', 'gothic rock', 'gothic metal']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.60 dB'
'TXXX:replaygain_track_peak'                        '0.991639'

========================== row from database ==========================
                                              'id'  292161
                                            'path'  /data/Music/Bulk/00dwimp/Type O Negative/Type O Negative - Slow, Deep And Hard/03 - Xero Tolerance.mp3
                                         'working'  None
                                         'bitrate'  237
                                    'duration_sec'  466
                                           'genre'  eid-metal-doom or gothic
                                        'filesize'  13833139
                                           'mtime'  1620310441
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 03 eid metal doom or gothic
                                      'tag_artist'  Type O Negative
                                     'tag_release'  Slow, Deep And Hard
                                       'tag_title'  Xero Tolerance
                                             'bpm'  128.74
                                    'search_title'  'tolerance':2 'xero':1
                                   'search_artist'  'negative':3 'o':2 'type':1
                                  'search_release'  'and':4 'deep':3 'hard':5 'slow':1,2
                                     'search_rest'  '00dwimp':1 'doom':4 'eid':2 'gothic':6 'metal':3 'or':5
                                    'search_combo'  '00dwimp':11 'and':9C 'deep':8C 'doom':14 'eid':12 'gothic':16 'hard':10C 'metal':13 'negative':5B 'o':4B 'or':15 'slow':6C,7C 'tolerance':2A 'type':3B 'xero':1A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-2', 'q-grit-3']
                                      'lastfmtags'  ['metal', 'gothic', 'doom metal', 'gothic rock', 'gothic metal']
                                        'tag_date'  1991
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310440.7730157  (2021-05-06 16:14:00)
                             'size'  13833139