======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '195'
                                          'artist'  'Twenty One Pilots'
                                     'text_people'  ''
                                         'release'  'Suicide Squad OST'
                                           'title'  'Heathens'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['indie', 'indie pop', 'alternative', 'electronic', 'rap']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2016'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '90.010'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Suicide Squad OST'
'TBPM' (BPM (beats per minute))                     '90.010'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2016'
'TIT2' (Title/songname/content description)         'Heathens'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Twenty One Pilots'
'TPE2' (Band/orchestra/accompaniment)               'Twenty One Pilots'
'TRCK' (Track number/Position in set)               '3'
'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'                                   ['indie', 'indie pop', 'alternative', 'electronic', 'rap']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.65 dB'
'TXXX:replaygain_track_peak'                        '0.385369'

========================== row from database ==========================
                                              'id'  1289539
                                            'path'  /data/Music/Bulk/00poprockelectronic/2016/Twenty One Pilots - Heathens.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  195
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  7944860
                                           'mtime'  1620566358
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 2016 hip hop or rnb or rap or turntablism
                                      'tag_artist'  Twenty One Pilots
                                     'tag_release'  Suicide Squad OST
                                       'tag_title'  Heathens
                                             'bpm'  90.01
                                    'search_title'  'heathens':1
                                   'search_artist'  'one':2 'pilots':3 'twenty':1
                                  'search_release'  'ost':3 'squad':2 'suicide':1
                                     'search_rest'  '00poprockelectronic':1 '2016':2 'hip':3 'hop':4 'or':5 'rap':7 'rnb':6 'turntablism':8
                                    'search_combo'  '00poprockelectronic':8 '2016':9 'heathens':1A 'hip':10 'hop':11 'one':3B 'or':12 'ost':7C 'pilots':4B 'rap':14 'rnb':13 'squad':6C 'suicide':5C 'turntablism':15 'twenty':2B
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'indie pop', 'alternative', 'electronic', 'rap']
                                        'tag_date'  2016
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620566358.4136586  (2021-05-09 15:19:18)
                             'size'  7944860