======================== unified (from filesystem) ========================
                                         'bitrate'  '182.564'
                                        'duration'  '3612'
                                          'artist'  'Headphoner &The Nurse'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Classic is fantastic'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '1'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '143.1'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM::\x00\x00x'                                   '1H'
'TBPM' (BPM (beats per minute))                     '143.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Classic is fantastic'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Headphoner &The Nurse'
'TRCK' (Track number/Position in set)               '1/1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.20 dB'
'TXXX:replaygain_track_peak'                        '0.751978'
'WXXX:'                                             WXXX(encoding=<Encoding.LATIN1: 0>, desc='', url='http://otoscope.free.fr')

========================== row from database ==========================
                                              'id'  1119805
                                            'path'  /data/Music/Bulk/00instruments-classical/Classic is fantastic/headphoner and the nurse-classic is fantastic.mp3
                                         'working'  None
                                         'bitrate'  182
                                    'duration_sec'  3612
                                           'genre'  electronic-unsorted
                                        'filesize'  82429952
                                           'mtime'  1620586919
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical headphoner and the nurse classic electronic unsorted
                                      'tag_artist'  Headphoner &The Nurse
                                     'tag_release'  None
                                       'tag_title'  Classic is fantastic
                                             'bpm'  143.1
                                    'search_title'  'classic':1 'fantastic':3 'is':2
                                   'search_artist'  'headphoner':1 'nurse':4 'the':2,3
                                  'search_release'  
                                     'search_rest'  '00instruments':1 'and':4 'classic':7 'classical':2 'electronic':8 'headphoner':3 'nurse':6 'the':5 'unsorted':9
                                    'search_combo'  '00instruments':8 'and':11 'classic':1A,14 'classical':9 'electronic':15 'fantastic':3A 'headphoner':4B,10 'is':2A 'nurse':7B,13 'the':5B,6B,12 'unsorted':16
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586919.0936782  (2021-05-09 21:01:59)
                             'size'  82429952