======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '248'
                                          'artist'  'Finntroll'
                                     'text_people'  ''
                                         'release'  'Rivfader Demo'
                                           'title'  'Rivfader'
                                           '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-4', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['folk metal', 'black metal', 'viking metal', 'metal', 'finnish']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'eid-metal-folk;eid-metal-melodic'
                                             'bpm'  '90'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'COMM:iTunNORM:eng'                                 (' 00000309 000002E6 000006E3 000009CD 0003347E 00027145 00004E46 0000512B '
 '0000C37E 0000C37E')
'PRIV:AverageLevel:{\x07\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x07\x00\x00')
'PRIV:PeakValue:!a\x00\x00'                         PRIV(owner='PeakValue', data=b'!a\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)                     'Rivfader Demo'
'TBPM' (BPM (beats per minute))                     '90'
'TCON' (Content type, a.k.a. Genre)                 ['eid-metal-folk', 'eid-metal-melodic']
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Rivfader'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Finntroll'
'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'                                   ['folk metal', 'black metal', 'viking metal', 'metal', 'finnish']
'TXXX:q-bass'                                       '2'
'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'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.25 dB'
'TXXX:replaygain_track_peak'                        '0.637302'

========================== row from database ==========================
                                              'id'  1343743
                                            'path'  /data/Music/Bulk/00poprockelectronic/Finntroll/Rivfader Demo/Finntroll-Rivfader(1).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  248
                                           'genre'  eid-metal-folk;eid-metal-melodic
                                        'filesize'  5962568
                                           'mtime'  1620301758
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Rivfader(1) eid metal folk;eid metal melodic
                                      'tag_artist'  Finntroll
                                     'tag_release'  Rivfader Demo
                                       'tag_title'  Rivfader
                                             'bpm'  90.0
                                    'search_title'  'rivfader':1
                                   'search_artist'  'finntroll':1
                                  'search_release'  'demo':2 'rivfader':1
                                     'search_rest'  '00poprockelectronic':1 '1':3 'eid':5,8,10 'folk':7,9 'melodic':11 'metal':6 'rivfader':2 'rivfader1':4
                                    'search_combo'  '00poprockelectronic':5 '1':7 'demo':4C 'eid':9,12,14 'finntroll':2B 'folk':11,13 'melodic':15 'metal':10 'rivfader':1A,3C,6 'rivfader1':8
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4']
                                      'lastfmtags'  ['folk metal', 'black metal', 'viking metal', 'metal', 'finnish']
                                        'tag_date'  1998
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620301757.9605873  (2021-05-06 13:49:17)
                             'size'  5962568