======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '183'
                                          'artist'  'At The Gates'
                                     'text_people'  ''
                                         'release'  'Suicidal Final Art'
                                           'title'  'Slaughter of the Soul'
                                           '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-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['swedish', 'metal', 'melodic death metal', 'death metal', 'gothenburg metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '94.813'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:T\x1a\x00\x00'                   PRIV(owner='AverageLevel', data=b'T\x1a\x00\x00')
'PRIV:PeakValue:^q\x00\x00'                         PRIV(owner='PeakValue', data=b'^q\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')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Suicidal Final Art'
'TBPM' (BPM (beats per minute))                     '94.813'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Slaughter of the Soul'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'At The Gates'
'TRCK' (Track number/Position in set)               '15'
'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', 'metal', 'melodic death metal', 'death metal', 'gothenburg metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'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'                        '-1.79 dB'
'TXXX:replaygain_track_peak'                        '0.442853'

========================== row from database ==========================
                                              'id'  1394809
                                            'path'  /data/Music/Bulk/00dwimp/00metal/At the gates/Suicidal final art/At The Gates_Suicidal Final Art_15_-_Slaughter of the Soul.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  183
                                           'genre'  eid-metal-death
                                        'filesize'  4404930
                                           'mtime'  1620301857
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal gates final art Gates_Suicidal Art_15_ _Slaughter eid metal death
                                      'tag_artist'  At The Gates
                                     'tag_release'  Suicidal Final Art
                                       'tag_title'  Slaughter of the Soul
                                             'bpm'  94.813
                                    'search_title'  'of':2 'slaughter':1 'soul':4 'the':3
                                   'search_artist'  'at':1 'gates':3 'the':2
                                  'search_release'  'art':3 'final':2 'suicidal':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '15':9 'art':5,8 'death':13 'eid':11 'final':4 'gates':3,6 'metal':12 'slaughter':10 'suicidal':7
                                    'search_combo'  '00dwimp':11 '00metal':12 '15':19 'art':10C,15,18 'at':5B 'death':23 'eid':21 'final':9C,14 'gates':7B,13,16 'metal':22 'of':2A 'slaughter':1A,20 'soul':4A 'suicidal':8C,17 'the':3A,6B
                                    'tag_tracknum'  15
                                      '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-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['swedish', 'metal', 'melodic death metal', 'death metal', 'gothenburg metal']
                                        'tag_date'  2001
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301856.530594  (2021-05-06 13:50:56)
                             'size'  4404930