======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '144'
                                          'artist'  'Bob Thompson'
                                     'text_people'  ''
                                         'release'  'Cafi Apris-Midi Marine'
                                           'title'  'MMM, Nice !'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['lounge', 'instrumental', 'swing', 'spoken word', 'easy listening']"
                                     'discogstags'  "['jazz', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  ''
                                             'bpm'  '112.321'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Cafi Apris-Midi Marine'
'TBPM' (BPM (beats per minute))                     '112.321'
'TIT2' (Title/songname/content description)         'MMM, Nice !'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bob Thompson'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'easy listening']
'TXXX:lastfmtags'                                   ['lounge', 'instrumental', 'swing', 'spoken word', 'easy listening']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+4.26 dB'
'TXXX:replaygain_track_peak'                        '0.426516'

========================== row from database ==========================
                                              'id'  1356546
                                            'path'  /data/Music/Bulk/00poprockelectronic/misc/Bob Thompson - MMM, Nice !.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  144
                                           'genre'  
                                        'filesize'  2311478
                                           'mtime'  1652398010
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic misc
                                      'tag_artist'  Bob Thompson
                                     'tag_release'  Cafi Apris-Midi Marine
                                       'tag_title'  MMM, Nice !
                                             'bpm'  112.321
                                    'search_title'  'mmm':1,2 'nice':3
                                   'search_artist'  'bob':1 'thompson':2
                                  'search_release'  'apris':2 'aprismidi':4 'cafi':1 'marine':5 'midi':3
                                     'search_rest'  '00poprockelectronic':1 'misc':2
                                    'search_combo'  '00poprockelectronic':11 'apris':7C 'aprismidi':9C 'bob':4B 'cafi':6C 'marine':10C 'midi':8C 'misc':12 'mmm':1A,2A 'nice':3A 'thompson':5B
                                    'tag_tracknum'  15
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']
                                      'lastfmtags'  ['lounge', 'instrumental', 'swing', 'spoken word', 'easy listening']
                                        'tag_date'  
                                     'discogstags'  ['jazz', 'easy listening']

============================== file details ==============================
                                           'mtime'  1652398009.8394954  (2022-05-13 01:26:49)
                             'size'  2311478