======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '240'
                                          'artist'  'Procol Harum'
                                     'text_people'  'Keith Reid & Gary Brooker'
                                         'release'  'The Boat That Rocked OST'
                                           'title'  'A Whiter Shade Of Pale'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'Q-PIANO-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  ("['60s', 'psychedelic rock', 'rock', 'progressive rock', 'psychedelic', "
 "'classic rock']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '18'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '145.9'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00000F2D 00000E60 000096CB 00008F0E 0002C88D 0002C88D 0000776C 00007442 '
 '0002C57D 0002C57D')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000924 0000000000A1F04C 00000000 0092CB98 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'The Boat That Rocked OST'
'TBPM' (BPM (beats per minute))                     '145.9'
'TCOM' (Composer)                                   'Keith Reid & Gary Brooker'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDRC' (Recording time)                             '2009'
'TENC' (Encoded by)                                 'iTunes 8.1.0.52'
'TIT2' (Title/songname/content description)         'A Whiter Shade Of Pale'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Procol Harum'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '5/18'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['60s',
 'psychedelic rock',
 'rock',
 'progressive rock',
 'psychedelic',
 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.11 dB'
'TXXX:replaygain_track_peak'                        '0.392689'

========================== row from database ==========================
                                              'id'  1275829
                                            'path'  /data/Music/Bulk/0soundtrack/The Supremes - The boat that rocked OST/2-05 A Whiter Shade Of Pale.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  240
                                           'genre'  soundtrack-video
                                        'filesize'  9802991
                                           'mtime'  1620334314
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Supremes boat that rocked 2 05 soundtrack video
                                      'tag_artist'  Procol Harum
                                     'tag_release'  The Boat That Rocked OST
                                       'tag_title'  A Whiter Shade Of Pale
                                             'bpm'  145.9
                                    'search_title'  'a':1 'of':4 'pale':5 'shade':3 'whiter':2
                                   'search_artist'  'harum':2 'procol':1
                                  'search_release'  'boat':2 'ost':5 'rocked':4 'that':3 'the':1
                                     'search_rest'  '0soundtrack':1 '2':6 'boat':3 'rocked':5 'soundtrack':7 'supremes':2 'that':4 'video':8
                                    'search_combo'  '0soundtrack':13 '2':18 'a':1A 'boat':9C,15 'harum':7B 'of':4A 'ost':12C 'pale':5A 'procol':6B 'rocked':11C,17 'shade':3A 'soundtrack':19 'supremes':14 'that':10C,16 'the':8C 'video':20 'whiter':2A
                                    'tag_tracknum'  5
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['60s', 'psychedelic rock', 'rock', 'progressive rock', 'psychedelic', 'classic rock']
                                        'tag_date'  2009
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620334314.432771  (2021-05-06 22:51:54)
                             'size'  9802991