======================== unified (from filesystem) ========================
                                         'bitrate'  '209.082'
                                        'duration'  '293'
                                          'artist'  'Negativland'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'The Perfect Cut (11 Minutes)'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-1', "
 "'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['electronic', 'noise', 'avant garde', 'experimental', 'sampling']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '9'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '137.571'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '137.571'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza', 'set-pl-mor']
'TCOP' (Copyright message)                          '℗ 1989 Seeland'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'The Perfect Cut (11 Minutes)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Negativland'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '8/9'
'TSOA' (Album sort order)                           'Helter Stupid'
'TSOP' (Performer sort order)                       'Negativland'
'TSOT' (Title sort order)                           'The Perfect Cut (11 Minutes)'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['electronic', 'noise', 'avant garde', 'experimental', 'sampling']
'TXXX:purchaseaccount'                              'luc@gut.li'
'TXXX:purchasedate'                                 '2017-04-24 14:45:29'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.43 dB'
'TXXX:replaygain_track_peak'                        '0.567873'

========================== row from database ==========================
                                              'id'  1107531
                                            'path'  /data/Music/Bulk/sns/Negativland - The Perfect Cut (11 Minutes).mp3
                                         'working'  None
                                         'bitrate'  209
                                    'duration_sec'  293
                                           'genre'  set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  7852333
                                           'mtime'  1621474611
                                   'redo_metaread'  0
                                        'rest_str'   sns set pl shirleyspinoza;set pl mor
                                      'tag_artist'  Negativland
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  The Perfect Cut (11 Minutes)
                                             'bpm'  137.571
                                    'search_title'  '11':4,5 'cut':3 'minutes':6,7 'perfect':2 'the':1
                                   'search_artist'  'negativland':1
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  'mor':8 'pl':3 'set':2,5,7 'shirleyspinoza':4,6 'sns':1
                                    'search_combo'  '11':4A,5A 'cut':3A 'minutes':6A,7A 'mor':18 'negativland':8B 'perfect':2A 'pl':13 'set':12,15,17 'shirley':9C 'shirleyspinoza':14,16 'sns':11 'spinoza':10C 'the':1A
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['electronic', 'noise', 'avant garde', 'experimental', 'sampling']
                                        'tag_date'  1989
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621474610.573846  (2021-05-20 03:36:50)
                             'size'  7852333