======================== unified (from filesystem) ========================
                                         'bitrate'  '224.0'
                                        'duration'  '237'
                                          'artist'  'Flied Egg'
                                     'text_people'  ''
                                         'release'  'Good Bye'
                                           'title'  'Before You Descend'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-3', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  ("['psychedelic rock', 'hard rock', 'progressive rock', 'japanese', "
 "'psychedelic']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '05'
                                      'tracktotal'  ''
                                            'date'  '1972'
                                        'comments'  ''
                                           'genre'  'rock-cppex'
                                             'bpm'  '91.1'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 0000018E 00000131 000007F0 0000062A 0001D4D7 0002712E 0000449F 00003892 '
 '0001D4D7 00004E37')
'TALB' (Album/Movie/Show title)                     'Good Bye'
'TBPM' (BPM (beats per minute))                     '91.1'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex'
'TDRC' (Recording time)                             '1972'
'TIT2' (Title/songname/content description)         'Before You Descend'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Flied Egg'
'TPE4' (Interpreted, remixed, or otherwise modified by)  'Written-By: P. Sky; Written-By: S. Narumo'
'TPUB' (Publisher)                                  'Vertigo'
'TRCK' (Track number/Position in set)               '05'
'TXXX:DISCOGS_FORMAT'                               'Vinyl, LP, , "Album", Album, '
'TXXX:DISCOGS_MASTER_RELEASE_ID'                    '107721'
'TXXX:DISCOGS_RELEASE_ID'                           '2178535'
'TXXX:Discogs_Catalog'                              'FX-8606'
'TXXX:Discogs_Country'                              'Japan'
'TXXX:Discogs_Credits'                              ('Masayoshi Takanaka (Bass, Vocals)\r\n'
 'Ken Kageoka (Design, Photography By)\r\n'
 'Hiro Tsunoda (Drums, Percussion, Vocals)\r\n'
 'Masayoshi Takanaka (Guitar) (track: B2)\r\n'
 'Shigeru Narumo (Guitar, Guitar [Slide], Acoustic Guitar, Organ [Hammond], '
 'Piano, Harpsichord, Backing Vocals)\r\n'
 'Hideo Takada (Mixed By)\r\n'
 'Masaharu Honjō (Producer)\r\n'
 'George Yanagi (Vocals) (track: B1)')
'TXXX:Discogs_Notes'                                "Released in a fold-out cover on a ''swirl'' Vertigo label."
'TXXX:Position'                                     'B1'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:Style'                                        'Prog Rock'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['psychedelic rock', 'hard rock', 'progressive rock', 'japanese', 'psychedelic']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.17 dB'
'TXXX:replaygain_track_peak'                        '0.684704'

========================== row from database ==========================
                                              'id'  1478258
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/flied egg - goodbye (japanese prog rock 1972)/05 Before You Descend.mp3
                                         'working'  None
                                         'bitrate'  224
                                    'duration_sec'  237
                                           'genre'  rock-cppex
                                        'filesize'  6775337
                                           'mtime'  1636921657
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy flied egg goodbye (japanese prog rock 1972) 05 rock cppex
                                      'tag_artist'  Flied Egg
                                     'tag_release'  Good Bye
                                       'tag_title'  Before You Descend
                                             'bpm'  91.1
                                    'search_title'  'before':1 'descend':3 'you':2
                                   'search_artist'  'egg':2 'flied':1
                                  'search_release'  'bye':2 'good':1
                                     'search_rest'  '1972':9,10 'classicprogpsy':1 'cppex':11 'egg':3 'flied':2 'goodbye':4 'japanese':5,6 'prog':7 'rock':8
                                    'search_combo'  '1972':16,17 'before':1A 'bye':7C 'classicprogpsy':8 'cppex':18 'descend':3A 'egg':5B,10 'flied':4B,9 'good':6C 'goodbye':11 'japanese':12,13 'prog':14 'rock':15 'you':2A
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-2', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-3', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['psychedelic rock', 'hard rock', 'progressive rock', 'japanese', 'psychedelic']
                                        'tag_date'  1972
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636921656.9687226  (2021-11-14 21:27:36)
                             'size'  6775337