======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '245'
                                          'artist'  '\x10E5@>='
                                     'text_people'  ''
                                         'release'  'New IV'
                                           'title'  '\x1f5@C='
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-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-2', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '2012'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '107.151'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:{\x18\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x18\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'New IV'
'TBPM' (BPM (beats per minute))                     '107.151'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2012'
'TENC' (Encoded by)                                 'Acoustica Mixcraft'
'TIT2' (Title/songname/content description)         '\x1f5@C='
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               '\x10E5@>='
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '03'
'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:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '3'
'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'                        '-2.51 dB'
'TXXX:replaygain_track_peak'                        '0.367832'

========================== row from database ==========================
                                              'id'  1394650
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Metal Compilation - New IV/040.Ахерон - Перун.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  245
                                           'genre'  eid-metal
                                        'filesize'  9852167
                                           'mtime'  1620301256
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal Metal Compilation 040.Ахерон Перун eid metal
                                      'tag_artist'  E5@>=
                                     'tag_release'  New IV
                                       'tag_title'  5@C=
                                             'bpm'  107.151
                                    'search_title'  '5':1 'c':2
                                   'search_artist'  'e5':1
                                  'search_release'  'iv':2 'new':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '040':5,8 '040axeron':10 '040ахерон':7 'axeron':9 'compilation':4 'eid':13 'metal':3 'perun':12 'ахерон':6 'перун':11
                                    'search_combo'  '00dwimp':6 '00metal':7 '040':10,13 '040axeron':15 '040ахерон':12 '5':1A 'axeron':14 'c':2A 'compilation':9 'e5':3B 'eid':18 'iv':5C 'metal':8 'new':4C 'perun':17 'ахерон':11 'перун':16
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  9A
                                           '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-2', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  []
                                        'tag_date'  2012
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620301255.992064  (2021-05-06 13:40:55)
                             'size'  9852167