======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '171'
                                          'artist'  'The Supremes'
                                     'text_people'  'Brian Holland, Lamont Dozier, Frank DeVol & Eddie Holland'
                                         'release'  'The Boat That Rocked OST'
                                           'title'  'The Happening'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['oldies', 'motown', 'female vocalists', 'soul', '60s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '18'
                                            'date'  '2009'
                                        'comments'  ''
                                           'genre'  'soundtrack-video;set-pl-shirleyspinoza;set-pl-mor'
                                             'bpm'  '86.1'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 00001825 0000178B 000170F3 000099BA 0001B692 0001876D 00007AA4 000080FF '
 '00015CFA 00022753')
'COMM:iTunPGAP:eng'                                 '0'
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000840 0000000000732AB0 00000000 00685E5E 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'The Boat That Rocked OST'
'TBPM' (BPM (beats per minute))                     '86.1'
'TCOM' (Composer)                                   'Brian Holland, Lamont Dozier, Frank DeVol & Eddie Holland'
'TCON' (Content type, a.k.a. Genre)                 ['soundtrack-video', 'set-pl-shirleyspinoza', 'set-pl-mor']
'TDRC' (Recording time)                             '2009'
'TENC' (Encoded by)                                 'iTunes 8.1.0.52'
'TIT2' (Title/songname/content description)         'The Happening'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Supremes'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TRCK' (Track number/Position in set)               '8/18'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['oldies', 'motown', 'female vocalists', 'soul', '60s']
'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-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.05 dB'
'TXXX:replaygain_track_peak'                        '0.354126'

========================== row from database ==========================
                                              'id'  1267126
                                            'path'  /data/Music/Bulk/0soundtrack/The Supremes - The boat that rocked OST/2-08 The Happening.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  171
                                           'genre'  soundtrack-video;set-pl-shirleyspinoza;set-pl-mor
                                        'filesize'  7022541
                                           'mtime'  1620334314
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack boat that rocked 2 08 soundtrack video;set pl shirleyspinoza;set pl mor
                                      'tag_artist'  The Supremes
                                     'tag_release'  The Boat That Rocked OST
                                       'tag_title'  The Happening
                                             'bpm'  86.1
                                    'search_title'  'happening':2 'the':1
                                   'search_artist'  'supremes':2 'the':1
                                  'search_release'  'boat':2 'ost':5 'rocked':4 'that':3 'the':1
                                     'search_rest'  '0soundtrack':1 '2':5 'boat':2 'mor':16 'pl':11 'rocked':4 'set':8,10,13,15 'shirleyspinoza':12,14 'soundtrack':6 'that':3 'video':7,9
                                    'search_combo'  '0soundtrack':10 '2':14 'boat':6C,11 'happening':2A 'mor':25 'ost':9C 'pl':20 'rocked':8C,13 'set':17,19,22,24 'shirleyspinoza':21,23 'soundtrack':15 'supremes':4B 'that':7C,12 'the':1A,3B,5C 'video':16,18
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['oldies', 'motown', 'female vocalists', 'soul', '60s']
                                        'tag_date'  2009
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620334314.485523  (2021-05-06 22:51:54)
                             'size'  7022541