======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '98'
                                          'artist'  'Pink Floyd'
                                     'text_people'  ''
                                         'release'  'Echoes: The Best of Pink Floyd'
                                           'title'  'The Happiest Days of Our Lives'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic "
 "rock']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '13'
                                            'date'  '2016'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '104'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Echoes: The Best of Pink Floyd'
'TBPM' (BPM (beats per minute))                     '104'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDOR' (Original release time)                      '2001'
'TDRC' (Recording time)                             '2016-06-16'
'TIT2' (Title/songname/content description)         'The Happiest Days of Our Lives'
'TKEY' (Initial key)                                '4A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Pink Floyd'
'TPE2' (Band/orchestra/accompaniment)               'Pink Floyd'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Pink Floyd Records'
'TRCK' (Track number/Position in set)               '3/13'
'TSO2'                                              'Pink Floyd'
'TSOP' (Performer sort order)                       'Pink Floyd'
'TSRC' (ISRC (international standard recording code))  'GBDJQ0100001'
'TXXX:Artists'                                      'Pink Floyd'
'TXXX:BARCODE'                                      '888751710320'
'TXXX:CATALOGNUMBER'                                '88875171032/PFR20'
'TXXX:MusicBrainz Album Artist Id'                  '83d91898-7763-47d7-b03b-b92132375c47'
'TXXX:MusicBrainz Album Id'                         'aa2f022b-a94c-46d6-969b-5402346b8881'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '83d91898-7763-47d7-b03b-b92132375c47'
'TXXX:MusicBrainz Release Group Id'                 '89349f02-09cd-3a27-b972-7d7729d6dee7'
'TXXX:MusicBrainz Release Track Id'                 'f0f3f90d-25da-4637-90d0-bdc6a736e5c8'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic rock']
'TXXX:originalyear'                                 '2001'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.56 dB'
'TXXX:replaygain_track_peak'                        '0.545855'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'c9764f29-a308-4580-9cfa-cb16cf2c7a94')

========================== row from database ==========================
                                              'id'  1410222
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Pink Floyd/Pink Floyd - The Happiest Days of Our Lives.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  98
                                           'genre'  rock-cppex-progressive
                                        'filesize'  2420420
                                           'mtime'  1620737725
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy rock cppex progressive
                                      'tag_artist'  Pink Floyd
                                     'tag_release'  Echoes: The Best of Pink Floyd
                                       'tag_title'  The Happiest Days of Our Lives
                                             'bpm'  104.0
                                    'search_title'  'days':3 'happiest':2 'lives':6 'of':4 'our':5 'the':1
                                   'search_artist'  'floyd':2 'pink':1
                                  'search_release'  'best':4 'echoes':1,2 'floyd':7 'of':5 'pink':6 'the':3
                                     'search_rest'  'classicprogpsy':1 'cppex':3 'progressive':4 'rock':2
                                    'search_combo'  'best':12C 'classicprogpsy':16 'cppex':18 'days':3A 'echoes':9C,10C 'floyd':8B,15C 'happiest':2A 'lives':6A 'of':4A,13C 'our':5A 'pink':7B,14C 'progressive':19 'rock':17 'the':1A,11C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic rock']
                                        'tag_date'  2016
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620737724.5265234  (2021-05-11 14:55:24)
                             'size'  2420420