======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '223'
                                          'artist'  'Supernaive'
                                     'text_people'  ''
                                         'release'  'Dazed & Confused'
                                           'title'  'Opal Waltz'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', 'q-mixbeat-2']")
                                      'lastfmtags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '84.0'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'POPM:MusicBee'                                     POPM(email='MusicBee', rating=196, count=0)
'TALB' (Album/Movie/Show title)                     'Dazed & Confused'
'TBPM' (BPM (beats per minute))                     '84.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TIT2' (Title/songname/content description)         'Opal Waltz'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Supernaive'
'TSSE' (Software/Hardware and settings used for encoding)  'Lame3.99'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   'electronic'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.62 dB'
'TXXX:replaygain_track_peak'                        '0.625868'

========================== row from database ==========================
                                              'id'  1333182
                                            'path'  /data/Music/Bulk/00poprockelectronic/Supernaive/Opal Waltz.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  223
                                           'genre'  electronic-unsorted
                                        'filesize'  4015137
                                           'mtime'  1620572160
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic electronic unsorted
                                      'tag_artist'  Supernaive
                                     'tag_release'  Dazed & Confused
                                       'tag_title'  Opal Waltz
                                             'bpm'  84.0
                                    'search_title'  'opal':1 'waltz':2
                                   'search_artist'  'supernaive':1
                                  'search_release'  'confused':2 'dazed':1
                                     'search_rest'  '00poprockelectronic':1 'electronic':2 'unsorted':3
                                    'search_combo'  '00poprockelectronic':6 'confused':5C 'dazed':4C 'electronic':7 'opal':1A 'supernaive':3B 'unsorted':8 'waltz':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-3', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronic']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620572159.9610403  (2021-05-09 16:55:59)
                             'size'  4015137