======================== unified (from filesystem) ========================
                                         'bitrate'  '209.765'
                                        'duration'  '183'
                                          'artist'  'This Mortal Coil'
                                     'text_people'  ''
                                         'release'  'Blood'
                                           'title'  'Late Night'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['4ad', 'alternative', 'gothic', 'ethereal', 'ambient']"
                                     'discogstags'  "['electronic', 'rock', 'experimental', 'ambient', 'ethereal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'electronic;set-pl-sced'
                                             'bpm'  '93.8'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 0000003E 0000003B 000001FC 00000165 00004886 00004886 000025A2 00001ED1 '
 '00004886 00004886')
'TALB' (Album/Movie/Show title)                     'Blood'
'TBPM' (BPM (beats per minute))                     '93.8'
'TCON' (Content type, a.k.a. Genre)                 ['electronic', 'set-pl-sced']
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Late Night'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'This Mortal Coil'
'TPE2' (Band/orchestra/accompaniment)               'This Mortal Coil'
'TRCK' (Track number/Position in set)               '13'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME v3.97 (beta)'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'experimental', 'ambient', 'ethereal']
'TXXX:lastfmtags'                                   ['4ad', 'alternative', 'gothic', 'ethereal', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.14 dB'
'TXXX:replaygain_track_peak'                        '0.699397'

========================== row from database ==========================
                                              'id'  1337306
                                            'path'  /data/Music/Bulk/00poprockelectronic/This Mortal Coil/[1991] Blood/13 Late Night.mp3
                                         'working'  None
                                         'bitrate'  209
                                    'duration_sec'  183
                                           'genre'  electronic;set-pl-sced
                                        'filesize'  4873965
                                           'mtime'  1636914463
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic [1991] 13 electronic;set pl sced
                                      'tag_artist'  This Mortal Coil
                                     'tag_release'  Blood
                                       'tag_title'  Late Night
                                             'bpm'  93.8
                                    'search_title'  'late':1 'night':2
                                   'search_artist'  'coil':3 'mortal':2 'this':1
                                  'search_release'  'blood':1
                                     'search_rest'  '00poprockelectronic':1 '1991':2,3 'electronic':4,6 'pl':8 'sced':9 'set':5,7
                                    'search_combo'  '00poprockelectronic':7 '1991':8,9 'blood':6C 'coil':5B 'electronic':10,12 'late':1A 'mortal':4B 'night':2A 'pl':14 'sced':15 'set':11,13 'this':3B
                                    'tag_tracknum'  13
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['4ad', 'alternative', 'gothic', 'ethereal', 'ambient']
                                        'tag_date'  1991
                                     'discogstags'  ['electronic', 'rock', 'experimental', 'ambient', 'ethereal']

============================== file details ==============================
                                           'mtime'  1636914462.5282798  (2021-11-14 19:27:42)
                             'size'  4873965