======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '38'
                                          'artist'  'Pink Freud'
                                     'text_people'  ''
                                         'release'  'Sorry Music Polska'
                                           'title'  'pong'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['yass', 'polish', 'jazz', 'nu jazz', 'polish jazz']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-newer-nu;set-pl-sced'
                                             'bpm'  '143.1'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:b\x13\x00\x00'                   PRIV(owner='AverageLevel', data=b'b\x13\x00\x00')
'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')
'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)                     'Sorry Music Polska'
'TBPM' (BPM (beats per minute))                     '143.1'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-newer-nu', 'set-pl-sced']
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'pong'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Pink Freud'
'TPE2' (Band/orchestra/accompaniment)               'Pink Freud'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['yass', 'polish', 'jazz', 'nu jazz', 'polish jazz']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.53 dB'
'TXXX:replaygain_track_peak'                        '0.598818'

========================== row from database ==========================
                                              'id'  1364789
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Pink Freud/[2003] Sorry Music Polska/04 pong.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  38
                                           'genre'  prerock-jb-jazz-newer-nu;set-pl-sced
                                        'filesize'  1562249
                                           'mtime'  1620533692
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country [2003] 04 prerock jb jazz newer nu;set pl sced
                                      'tag_artist'  Pink Freud
                                     'tag_release'  Sorry Music Polska
                                       'tag_title'  pong
                                             'bpm'  143.1
                                    'search_title'  'pong':1
                                   'search_artist'  'freud':2 'pink':1
                                  'search_release'  'music':2 'polska':3 'sorry':1
                                     'search_rest'  '2003':5,6 'country':4 'exotica':2 'jazz':1 'jb':8 'newer':9 'nu':10,12 'oldies':3 'pl':14 'prerock':7 'sced':15 'set':11,13
                                    'search_combo'  '2003':11,12 'country':10 'exotica':8 'freud':3B 'jazz':7 'jb':14 'music':5C 'newer':15 'nu':16,18 'oldies':9 'pink':2B 'pl':20 'polska':6C 'pong':1A 'prerock':13 'sced':21 'set':17,19 'sorry':4C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['yass', 'polish', 'jazz', 'nu jazz', 'polish jazz']
                                        'tag_date'  2003
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620533692.0068119  (2021-05-09 06:14:52)
                             'size'  1562249