======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '110'
                                          'artist'  'Esbjörn Svensson Trio'
                                     'text_people'  'Esbjörn Svensson'
                                         'release'  'Good Morning Susie Soho'
                                           'title'  'Serenity'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-2', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['swedish', 'jazz piano', 'jazz', 'contemporary jazz', 'instrumental', "
 "'piano']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '11'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '135'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            ' 0000002F 00000023 00000E00'
'COMM:iTunNORM:eng'                                 (' 0000002F 00000023 00000E00 00000B49 0000D4DB 0000528D 00002DC9 00002829 '
 '00007BE0 0001134E')
'COMM:iTunes_CDDB_IDs:eng'                          '11+CB402B817AA8AAC5FCC3FA2F5F18E157+949496'
'TALB' (Album/Movie/Show title)                     'Good Morning Susie Soho'
'TBPM' (BPM (beats per minute))                     '135'
'TCOM' (Composer)                                   'Esbjörn Svensson'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDOR' (Original release time)                      '2000'
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'iTunes v4.2'
'TIT2' (Title/songname/content description)         'Serenity'
'TKEY' (Initial key)                                '6B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Esbjörn Svensson Trio'
'TPE2' (Band/orchestra/accompaniment)               'Esbjörn Svensson Trio'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Superstudio Gul'
'TRCK' (Track number/Position in set)               '3/11'
'TSO2'                                              'Svensson, Esbjörn, Trio'
'TSOP' (Performer sort order)                       'Svensson, Esbjörn, Trio'
'TSRC' (ISRC (international standard recording code))  'SELED0004040'
'TXXX:ASIN'                                         'B002SQZD4W'
'TXXX:Artists'                                      'Esbjörn Svensson Trio'
'TXXX:BARCODE'                                      '7320470007730'
'TXXX:CATALOGNUMBER'                                'GUL C-4'
'TXXX:MusicBrainz Album Artist Id'                  'cfa7c6b1-bbb3-4f9a-a636-cbfafb9b4bcf'
'TXXX:MusicBrainz Album Id'                         '99893961-6795-3028-9a02-f7a83be1c8d6'
'TXXX:MusicBrainz Album Release Country'            'SE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'cfa7c6b1-bbb3-4f9a-a636-cbfafb9b4bcf'
'TXXX:MusicBrainz Release Group Id'                 'db13871d-f604-317b-84bc-5165e2af9e75'
'TXXX:MusicBrainz Release Track Id'                 '98f87a0a-762d-3bd1-998d-97c58e5dc728'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['swedish', 'jazz piano', 'jazz', 'contemporary jazz', 'instrumental', 'piano']
'TXXX:originalyear'                                 '2000'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.98 dB'
'TXXX:replaygain_track_peak'                        '0.853677'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'8ec80b0e-4070-4b84-9eb2-d44c87715fe1')

========================== row from database ==========================
                                              'id'  784321
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Esbjörn Svensson Trio/Good Morning Susie Soho/03 Serenity.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  110
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  2709283
                                           'mtime'  1620573985
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 03 prerock jb jazz unsorted
                                      'tag_artist'  Esbjörn Svensson Trio
                                     'tag_release'  Good Morning Susie Soho
                                       'tag_title'  Serenity
                                             'bpm'  135.0
                                    'search_title'  'serenity':1
                                   'search_artist'  'esbjorn':1,2 'svensson':3 'trio':4
                                  'search_release'  'good':1 'morning':2 'soho':4 'susie':3
                                     'search_rest'  'country':4 'exotica':2 'jazz':1 'jb':6 'oldies':3 'prerock':5 'unsorted':7
                                    'search_combo'  'country':13 'esbjorn':2B,3B 'exotica':11 'good':6C 'jazz':10 'jb':15 'morning':7C 'oldies':12 'prerock':14 'serenity':1A 'soho':9C 'susie':8C 'svensson':4B 'trio':5B 'unsorted':16
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['swedish', 'jazz piano', 'jazz', 'contemporary jazz', 'instrumental', 'piano']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573984.6805625  (2021-05-09 17:26:24)
                             'size'  2709283