======================== unified (from filesystem) ========================
                                         'bitrate'  '227.966'
                                        'duration'  '332'
                                          'artist'  'Jaga Jazzist'
                                     'text_people'  ''
                                         'release'  'What We Must'
                                           'title'  'Oslo Skyline'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'ninja tune', 'jazz', 'electronic', 'nu jazz']"
                                     'discogstags'  "['electronic', 'rock', 'fusion', 'future jazz', 'post rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'electronic-trip hop or downtempo or acid jazz'
                                             'bpm'  '99.420'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'APIC:picture'                                      type PictureType.COVER_FRONT (Cover (front)) b'picture'
                                     
'COMM:Media Jukebox: Date:\x00\x00\x00'             '38353'
'COMM:Media Jukebox: Tool Name:\x00\x00\x00'        'Media Center'
'COMM:Media Jukebox: Tool Version:\x00\x00\x00'     '12.0.497'
'TALB' (Album/Movie/Show title)                     'What We Must'
'TBPM' (BPM (beats per minute))                     '99.420'
'TCON' (Content type, a.k.a. Genre)                 'electronic-trip hop or downtempo or acid jazz'
'TDRC' (Recording time)                             '2005'
'TENC' (Encoded by)                                 '[BFHMP3 (C) 2004]'
'TIT2' (Title/songname/content description)         'Oslo Skyline'
'TKEY' (Initial key)                                '1B'
'TLAN' (Language(s))                                'English'
'TPE1' (Lead performer(s)/Soloist(s))               'Jaga Jazzist'
'TRCK' (Track number/Position in set)               '4'
'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', 'rock', 'fusion', 'future jazz', 'post rock']
'TXXX:lastfmtags'                                   ['instrumental', 'ninja tune', 'jazz', 'electronic', 'nu jazz']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.41 dB'
'TXXX:replaygain_track_peak'                        '0.432042'

========================== row from database ==========================
                                              'id'  1385878
                                            'path'  /data/Music/Bulk/00poprockelectronic/00trip/Jaga Jazzist - What We Must [Ninja Tune, 2005]/Jaga Jazzist - 04 - Oslo Skyline.mp3
                                         'working'  None
                                         'bitrate'  228
                                    'duration_sec'  332
                                           'genre'  electronic-trip hop or downtempo or acid jazz
                                        'filesize'  9512117
                                           'mtime'  1636910615
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00trip [Ninja Tune, 2005] 04 electronic trip hop or downtempo or acid jazz
                                      'tag_artist'  Jaga Jazzist
                                     'tag_release'  What We Must
                                       'tag_title'  Oslo Skyline
                                             'bpm'  99.42
                                    'search_title'  'oslo':1 'skyline':2
                                   'search_artist'  'jaga':1 'jazzist':2
                                  'search_release'  'must':3 'we':2 'what':1
                                     'search_rest'  '00poprockelectronic':1 '00trip':2 '2005':7,8 'acid':14 'downtempo':13 'electronic':9 'hop':11 'jazz':15 'ninja':3,4 'or':12 'trip':10 'tune':5,6
                                    'search_combo'  '00poprockelectronic':8 '00trip':9 '2005':14,15 'acid':21 'downtempo':20 'electronic':16 'hop':18 'jaga':3B 'jazz':22 'jazzist':4B 'must':7C 'ninja':10,11 'or':19 'oslo':1A 'skyline':2A 'trip':17 'tune':12,13 'we':6C 'what':5C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-3', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'ninja tune', 'jazz', 'electronic', 'nu jazz']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic', 'rock', 'fusion', 'future jazz', 'post rock']

============================== file details ==============================
                                           'mtime'  1636910614.953989  (2021-11-14 18:23:34)
                             'size'  9512117