======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '218'
                                          'artist'  'Amy Winehouse'
                                     'text_people'  ''
                                         'release'  'Sampler'
                                           'title'  'Stronger Than Me'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-HHRNBTT-3', "
 "'Q-UNU-1', 'q-syn-3', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['jazz', 'female vocalists', 'soul', 'british']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '9'
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '91.349'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000001B6 0000019D 00002436'
'COMM:iTunNORM:eng'                                 (' 000001B6 0000019D 00002436 000022A6 00004372 00014E2F 00007728 00007923 '
 '0000149C 0000149C')
'TALB' (Album/Movie/Show title)                     'Sampler'
'TBPM' (BPM (beats per minute))                     '91.349'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TENC' (Encoded by)                                 'iTunes v4.0.1'
'TIT2' (Title/songname/content description)         'Stronger Than Me'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Amy Winehouse'
'TRCK' (Track number/Position in set)               '2/9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'female vocalists', 'soul', 'british']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.09 dB'
'TXXX:replaygain_track_peak'                        '0.939130'

========================== row from database ==========================
                                              'id'  767609
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Amy Winehouse - STRONGER THAN ME.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  218
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  5349202
                                           'mtime'  1620586817
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism STRONGER THAN ME hip hop or rnb or rap or turntablism
                                      'tag_artist'  Amy Winehouse
                                     'tag_release'  Sampler
                                       'tag_title'  Stronger Than Me
                                             'bpm'  91.349
                                    'search_title'  'me':3 'stronger':1 'than':2
                                   'search_artist'  'amy':1 'winehouse':2
                                  'search_release'  'sampler':1
                                     'search_rest'  'hip':8 'hiphop':1 'hop':9 'me':7 'or':10 'rap':2 'rnb':3 'stronger':5 'than':6 'turntablism':4
                                    'search_combo'  'amy':4B 'hip':14 'hiphop':7 'hop':15 'me':3A,13 'or':16 'rap':8 'rnb':9 'sampler':6C 'stronger':1A,11 'than':2A,12 'turntablism':10 'winehouse':5B
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-2', '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-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['jazz', 'female vocalists', 'soul', 'british']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620586816.9432642  (2021-05-09 21:00:16)
                             'size'  5349202