======================== unified (from filesystem) ========================
                                         'bitrate'  '164.497'
                                        'duration'  '263'
                                          'artist'  'Bizet G.'
                                     'text_people'  ''
                                         'release'  'Opera Sampler'
                                           'title'  "Carmen: La fleur que tu m'avais jetee"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['classical', 'opera', 'romantic', 'french', 'composers']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '143.7'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'MCDI' (Music CD identifier)                        MCDI(data=b'\x00j\x01\x0c\x00\x10\x01\x00\x00\x00\x00\x00\x00\x10\x02\x00\x00\x00\x89\xf5\x00\x10\x03\x00\x00\x00\xdb\x1c\x00\x10\x04\x00\x00\x01-m\x00\x10\x05\x00\x00\x02\x0c\xad\x00\x10\x06\x00\x00\x02.\x18\x00\x10\x07\x00\x00\x02f\xa1\x00\x10\x08\x00\x00\x02\xaaU\x00\x10\t\x00\x00\x03)v\x00\x10\n\x00\x00\x03\x83g\x00\x10\x0b\x00\x00\x03\xd1\xa0\x00\x10\x0c\x00\x00\x03\xeb\x1d\x00\x10\xaa\x00\x00\x04\x19\x9e')
'TALB' (Album/Movie/Show title)                     'Opera Sampler'
'TBPM' (BPM (beats per minute))                     '143.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TENC' (Encoded by)                                 'Greg'
'TIT2' (Title/songname/content description)         "Carmen: La fleur que tu m'avais jetee"
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bizet G.'
'TRCK' (Track number/Position in set)               '10'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.92, VBR 2, Stereo, High quality'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classical', 'opera', 'romantic', 'french', 'composers']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.56 dB'
'TXXX:replaygain_track_peak'                        '1.000844'

========================== row from database ==========================
                                              'id'  1513259
                                            'path'  /data/Music/Bulk/00instruments-classical/Bizet G. - 10 - Carmen- La fleur que tu m_avais jetee.mp3
                                         'working'  None
                                         'bitrate'  164
                                    'duration_sec'  263
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  5421685
                                           'mtime'  1620561481
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 10 m_avais prerock classical or classical instruments
                                      'tag_artist'  Bizet G.
                                     'tag_release'  Opera Sampler
                                       'tag_title'  Carmen: La fleur que tu m'avais jetee
                                             'bpm'  143.7
                                    'search_title'  'avais':8 'carmen':1,2 'fleur':4 'jetee':10 'la':3 'm':7 'mavais':9 'que':5 'tu':6
                                   'search_artist'  'bizet':1 'g':2,3
                                  'search_release'  'opera':1 'sampler':2
                                     'search_rest'  '00instruments':1 'avais':4 'classical':2 'instruments':7 'm':3 'or':6 'prerock':5
                                    'search_combo'  '00instruments':16 'avais':8A,19 'bizet':11B 'carmen':1A,2A 'classical':17 'fleur':4A 'g':12B,13B 'instruments':22 'jetee':10A 'la':3A 'm':7A,18 'mavais':9A 'opera':14C 'or':21 'prerock':20 'que':5A 'sampler':15C 'tu':6A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['classical', 'opera', 'romantic', 'french', 'composers']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561480.7622006  (2021-05-09 13:58:00)
                             'size'  5421685