======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '345'
                                          'artist'  'Gregorian'
                                     'text_people'  ''
                                         'release'  'Masters Of Chant Chapter 2'
                                           'title'  'In The Air Tonight'
                                           'quals'  ("['Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-2', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-2']")
                                      'lastfmtags'  "['new age', 'choir', 'celtic', 'ambient']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '03'
                                      'tracktotal'  '12'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'set-cover or covered'
                                             'bpm'  '91.971'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 000006AC 000006A1 00004BFE'
'COMM:iTunNORM:eng'                                 (' 000006AC 000006A1 00004BFE 0000524C 0003498A 0003C28A 00008000 00008000 '
 '000323FD 00032389')
'TALB' (Album/Movie/Show title)                     'Masters Of Chant Chapter 2'
'TBPM' (BPM (beats per minute))                     '91.971'
'TCON' (Content type, a.k.a. Genre)                 'set-cover or covered'
'TDRC' (Recording time)                             '2001'
'TENC' (Encoded by)                                 'Exact Audio Copy   (Ñêîðîñòíîé ðåæèì)'
'TIT2' (Title/songname/content description)         'In The Air Tonight'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Gregorian'
'TPE2' (Band/orchestra/accompaniment)               'Gregorian'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '03/12'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['new age', 'choir', 'celtic', 'ambient']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.27 dB'
'TXXX:replaygain_track_peak'                        '0.537880'

========================== row from database ==========================
                                              'id'  1355231
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Gregorian/03-in the air tonight.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  345
                                           'genre'  set-cover or covered
                                        'filesize'  11120228
                                           'mtime'  1620349576
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted 03 in the air tonight set cover covered
                                      'tag_artist'  Gregorian
                                     'tag_release'  Masters Of Chant Chapter 2
                                       'tag_title'  In The Air Tonight
                                             'bpm'  91.971
                                    'search_title'  'air':3 'in':1 'the':2 'tonight':4
                                   'search_artist'  'gregorian':1
                                  'search_release'  '2':5 'chant':3 'chapter':4 'masters':1 'of':2
                                     'search_rest'  '00poprockelectronic':1 'air':5 'cover':8 'covered':9 'in':3 'set':7 'the':4 'tonight':6 'unsorted':2
                                    'search_combo'  '00poprockelectronic':11 '2':10C 'air':3A,15 'chant':8C 'chapter':9C 'cover':18 'covered':19 'gregorian':5B 'in':1A,13 'masters':6C 'of':7C 'set':17 'the':2A,14 'tonight':4A,16 'unsorted':12
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['new age', 'choir', 'celtic', 'ambient']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620349576.139801  (2021-05-07 03:06:16)
                             'size'  11120228