======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '187'
                                          'artist'  'Daisy Dynamite'
                                     'text_people'  ''
                                         'release'  '7"'
                                           'title'  'Chattanooga Choo-Choo'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  ''
                                            'date'  '1973'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '133.491'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         '365 Days Project'
'COMM:ID3v1 Comment:XXX'                            '365 Days Project'
'TALB' (Album/Movie/Show title)                     '7"'
'TBPM' (BPM (beats per minute))                     '133.491'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TDRC' (Recording time)                             '1973'
'TIT2' (Title/songname/content description)         'Chattanooga Choo-Choo'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Daisy Dynamite'
'TRCK' (Track number/Position in set)               '03'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.15 dB'
'TXXX:replaygain_track_peak'                        '0.748342'

========================== row from database ==========================
                                              'id'  1351957
                                            'path'  /data/Music/Bulk/00poprockelectronic/11/321_3_Daisy_Dynamite_-_Chattanooga_Choo-Choo.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  187
                                           'genre'  electronic-unsorted
                                        'filesize'  4853370
                                           'mtime'  1620565338
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 11 321_3_Daisy_Dynamite_ _Chattanooga_Choo electronic unsorted
                                      'tag_artist'  Daisy Dynamite
                                     'tag_release'  7"
                                       'tag_title'  Chattanooga Choo-Choo
                                             'bpm'  133.491
                                    'search_title'  'chattanooga':1 'choo':2,3 'choochoo':4
                                   'search_artist'  'daisy':1 'dynamite':2
                                  'search_release'  '7':1
                                     'search_rest'  '00poprockelectronic':1 '3':3 '321':2 'chattanooga':6 'choo':7 'daisy':4 'dynamite':5 'electronic':8 'unsorted':9
                                    'search_combo'  '00poprockelectronic':8 '3':10 '321':9 '7':7C 'chattanooga':1A,13 'choo':2A,3A,14 'choochoo':4A 'daisy':5B,11 'dynamite':6B,12 'electronic':15 'unsorted':16
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1973
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620565338.3514009  (2021-05-09 15:02:18)
                             'size'  4853370