======================== unified (from filesystem) ========================
                                         'bitrate'  '150.846'
                                        'duration'  '230'
                                          'artist'  'The Abyssinians'
                                     'text_people'  ''
                                         'release'  'Last Days'
                                           'title'  'Young Wings'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-UNU-2', 'Q-HHRNBTT-2', 'Q-OLDST-2', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['reggae', 'roots reggae', 'ska', 'dub', 'roots']"
                                     'discogstags'  "['reggae']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '12'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'loc-style-reggae or dub or ska or dancehall-dub-roots and reggae'
                                             'bpm'  '105.974'
                                             'key'  '8A'
                                        'acoustid'  'dd5231fe-2a6c-485c-b8f6-77c0e3f4e9e5'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Last Days'
'TBPM' (BPM (beats per minute))                     '105.974'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-reggae or dub or ska or dancehall-dub-roots and reggae'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Young Wings'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Abyssinians'
'TPE2' (Band/orchestra/accompaniment)               'The Abyssinians'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '4/12'
'TSO2'                                              'Abyssinians, The'
'TSOP' (Performer sort order)                       'Abyssinians, The'
'TXXX:ASIN'                                         'B00000IYNG'
'TXXX:Acoustid Id'                                  'dd5231fe-2a6c-485c-b8f6-77c0e3f4e9e5'
'TXXX:Artists'                                      'The Abyssinians'
'TXXX:MusicBrainz Album Artist Id'                  '103ae173-2204-40b8-a6a8-f1623304deed'
'TXXX:MusicBrainz Album Id'                         'bc430c00-5af5-4a55-9923-d74b028ed09d'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '103ae173-2204-40b8-a6a8-f1623304deed'
'TXXX:MusicBrainz Release Group Id'                 'b35223b8-47a6-3188-8f71-76e9ff7d1701'
'TXXX:MusicBrainz Release Track Id'                 'a9861c13-548c-3e2f-8867-9809a454a44d'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'reggae'
'TXXX:lastfmtags'                                   ['reggae', 'roots reggae', 'ska', 'dub', 'roots']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.25 dB'
'TXXX:replaygain_track_peak'                        '0.511598'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'18a7a79f-931e-44fa-9cc5-b38de5c79f7a')

========================== row from database ==========================
                                              'id'  1377644
                                            'path'  /data/Music/Bulk/00localcharacter/00reggae-dub/The Abyssinians/Last Days/04. Young wings.mp3
                                         'working'  None
                                         'bitrate'  150
                                    'duration_sec'  230
                                           'genre'  loc-style-reggae or dub or ska or dancehall-dub-roots and reggae
                                        'filesize'  4399513
                                           'mtime'  1620522424
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00reggae dub 04. wings loc style reggae or dub or ska or dancehall dub roots and reggae
                                      'tag_artist'  The Abyssinians
                                     'tag_release'  Last Days
                                       'tag_title'  Young Wings
                                             'bpm'  105.974
                                    'search_title'  'wings':2 'young':1
                                   'search_artist'  'abyssinians':2 'the':1
                                  'search_release'  'days':2 'last':1
                                     'search_rest'  '00reggae':1 '04':3,4 'and':13 'dancehall':11 'dub':2 'loc':6 'or':9 'reggae':8 'roots':12 'ska':10 'style':7 'wings':5
                                    'search_combo'  '00reggae':7 '04':9,10 'abyssinians':4B 'and':19 'dancehall':17 'days':6C 'dub':8 'last':5C 'loc':12 'or':15 'reggae':14 'roots':18 'ska':16 'style':13 'the':3B 'wings':2A,11 'young':1A
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['reggae', 'roots reggae', 'ska', 'dub', 'roots']
                                        'tag_date'  1999
                                     'discogstags'  ['reggae']

============================== file details ==============================
                                           'mtime'  1620522423.5144215  (2021-05-09 03:07:03)
                             'size'  4399513