======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '321'
                                          'artist'  'Amon Amarth'
                                     'text_people'  ''
                                         'release'  'The Crusher'
                                           'title'  'The Fall Through Ginnungagap'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-4', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swedish', 'death metal', 'melodic death metal', 'viking metal', 'metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal-death;eid-metal-melodic'
                                             'bpm'  '104.122'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
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'TALB' (Album/Movie/Show title)                     'The Crusher'
'TBPM' (BPM (beats per minute))                     '104.122'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal-death', 'eid-metal-melodic']
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'The Fall Through Ginnungagap'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Amon Amarth'
'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'                                  'rock'
'TXXX:lastfmtags'                                   ['swedish', 'death metal', 'melodic death metal', 'viking metal', 'metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.27 dB'
'TXXX:replaygain_track_peak'                        '0.424238'

========================== row from database ==========================
                                              'id'  1401209
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Amon Amarth/The Crusher/amon amarth - the crusher - 08 - the fall through ginnungagap.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  321
                                           'genre'  eid-metal-death;eid-metal-melodic
                                        'filesize'  6434616
                                           'mtime'  1620301838
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal amon amarth the crusher 08 the fall through ginnungagap eid metal death;eid metal melodic
                                      'tag_artist'  Amon Amarth
                                     'tag_release'  The Crusher
                                       'tag_title'  The Fall Through Ginnungagap
                                             'bpm'  104.122
                                    'search_title'  'fall':2 'ginnungagap':4 'the':1 'through':3
                                   'search_artist'  'amarth':2 'amon':1
                                  'search_release'  'crusher':2 'the':1
                                     'search_rest'  '00dwimp':1 '00metal':2 'amarth':4 'amon':3 'crusher':6 'death':12,14 'eid':10,13,15 'fall':7 'ginnungagap':9 'melodic':16 'metal':11 'the':5 'through':8
                                    'search_combo'  '00dwimp':9 '00metal':10 'amarth':6B,12 'amon':5B,11 'crusher':8C,14 'death':20,22 'eid':18,21,23 'fall':2A,15 'ginnungagap':4A,17 'melodic':24 'metal':19 'the':1A,7C,13 'through':3A,16
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'death metal', 'melodic death metal', 'viking metal', 'metal']
                                        'tag_date'  2001
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301837.6417491  (2021-05-06 13:50:37)
                             'size'  6434616