======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '272'
                                          'artist'  'Ludovico Einaudi'
                                     'text_people'  ''
                                         'release'  'Una Mattina'
                                           'title'  'A Fuoco'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-3', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['contemporary classical', 'instrumental', 'piano', 'classical', 'ambient']"
                                     'discogstags'  "['classical', 'contemporary', 'neo-classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments-contemporary'
                                             'bpm'  '132.531'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:{\x0b\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x0b\x00\x00')
'PRIV:PeakValue:¡b\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1b\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)                     'Una Mattina'
'TBPM' (BPM (beats per minute))                     '132.531'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments-contemporary'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         'A Fuoco'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '272770'
'TPE1' (Lead performer(s)/Soloist(s))               'Ludovico Einaudi'
'TRCK' (Track number/Position in set)               '05'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['classical', 'contemporary', 'neo-classical']
'TXXX:lastfmtags'                                   ['contemporary classical', 'instrumental', 'piano', 'classical', 'ambient']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.72 dB'
'TXXX:replaygain_track_peak'                        '1.297014'

========================== row from database ==========================
                                              'id'  1340731
                                            'path'  /data/Music/Bulk/00instruments-classical/Ludovico Einaudi/Una Mattina/05 a fuoco.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  272
                                           'genre'  prerock-classical or classical instruments-contemporary
                                        'filesize'  4366378
                                           'mtime'  1637329798
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 05 fuoco prerock classical or classical instruments contemporary
                                      'tag_artist'  Ludovico Einaudi
                                     'tag_release'  Una Mattina
                                       'tag_title'  A Fuoco
                                             'bpm'  132.531
                                    'search_title'  'a':1 'fuoco':2
                                   'search_artist'  'einaudi':2 'ludovico':1
                                  'search_release'  'mattina':2 'una':1
                                     'search_rest'  '00instruments':1 'classical':2 'contemporary':7 'fuoco':3 'instruments':6 'or':5 'prerock':4
                                    'search_combo'  '00instruments':7 'a':1A 'classical':8 'contemporary':13 'einaudi':4B 'fuoco':2A,9 'instruments':12 'ludovico':3B 'mattina':6C 'or':11 'prerock':10 'una':5C
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-1', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['contemporary classical', 'instrumental', 'piano', 'classical', 'ambient']
                                        'tag_date'  2004
                                     'discogstags'  ['classical', 'contemporary', 'neo-classical']

============================== file details ==============================
                                           'mtime'  1637329798.4389374  (2021-11-19 14:49:58)
                             'size'  4366378