======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '207'
                                          'artist'  'The Prodigy'
                                     'text_people'  ''
                                         'release'  'Invaders Must Die'
                                           'title'  'Colours'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['industrial', 'dance', 'techno', 'electronic', 'electronica']"
                                     'discogstags'  "['electronic', 'breaks', 'big beat']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '11'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-bigbeat'
                                             'bpm'  '98.167'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 00000B5E 00000B2F 00002B34'
'COMM:iTunNORM:eng'                                 (' 00000B5E 00000B2F 00002B34 00002B78 0000447B 0001B717 00008000 00008000 '
 '00000687 00000670')
'TALB' (Album/Movie/Show title)                     'Invaders Must Die'
'TBPM' (BPM (beats per minute))                     '98.167'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-bigbeat'
'TDRC' (Recording time)                             '2009'
'TIT2' (Title/songname/content description)         'Colours'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Prodigy'
'TRCK' (Track number/Position in set)               '4/11'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'breaks', 'big beat']
'TXXX:lastfmtags'                                   ['industrial', 'dance', 'techno', 'electronic', 'electronica']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.73 dB'
'TXXX:replaygain_track_peak'                        '0.533483'

========================== row from database ==========================
                                              'id'  1292193
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Prodigy/04 colours.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  207
                                           'genre'  electronic-generic or radio-bigbeat
                                        'filesize'  8330969
                                           'mtime'  1621696699
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted 04 colours electronic generic or radio bigbeat
                                      'tag_artist'  The Prodigy
                                     'tag_release'  Invaders Must Die
                                       'tag_title'  Colours
                                             'bpm'  98.167
                                    'search_title'  'colours':1
                                   'search_artist'  'prodigy':2 'the':1
                                  'search_release'  'die':3 'invaders':1 'must':2
                                     'search_rest'  '00poprockelectronic':1 'bigbeat':8 'colours':3 'electronic':4 'generic':5 'or':6 'radio':7 'unsorted':2
                                    'search_combo'  '00poprockelectronic':7 'bigbeat':14 'colours':1A,9 'die':6C 'electronic':10 'generic':11 'invaders':4C 'must':5C 'or':12 'prodigy':3B 'radio':13 'the':2B 'unsorted':8
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'dance', 'techno', 'electronic', 'electronica']
                                        'tag_date'  2009
                                     'discogstags'  ['electronic', 'breaks', 'big beat']

============================== file details ==============================
                                           'mtime'  1621696699.1542125  (2021-05-22 17:18:19)
                             'size'  8330969