======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '171'
                                          'artist'  'The Nat King Cole Trio'
                                     'text_people'  'united states'
                                         'release'  'The Complete Capitol Recordings of the Nat King Cole Trio'
                                           'title'  'i never had a chance (l2)'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'jazz', '60s', 'vocal', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1942'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing'
                                             'bpm'  '142.9'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'cd 9'
'TALB' (Album/Movie/Show title)                     'The Complete Capitol Recordings of the Nat King Cole Trio'
'TBPM' (BPM (beats per minute))                     '142.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-swing'
'TCOP' (Copyright message)                          'mosaic'
'TDRC' (Recording time)                             '1942'
'TENC' (Encoded by)                                 '18xcd'
'TIT2' (Title/songname/content description)         'i never had a chance (l2)'
'TKEY' (Initial key)                                '6A'
'TOPE' (Original artist(s)/performer(s))            'united states'
'TPE1' (Lead performer(s)/Soloist(s))               'The Nat King Cole Trio'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues', 'jazz', '60s', 'vocal', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.13 dB'
'TXXX:replaygain_track_peak'                        '0.887789'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'da1e22e4-3e04-469f-9216-e269ac21bdb6')

========================== row from database ==========================
                                              'id'  1269318
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The Nat King Cole Trio - cd 09 [192k]/01 - i never had a chance (l2).mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  171
                                           'genre'  prerock-jb-jazz-soft-swing
                                        'filesize'  4199298
                                           'mtime'  1620536511
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country cd 09 [192k] 01 prerock jb jazz soft swing
                                      'tag_artist'  The Nat King Cole Trio
                                     'tag_release'  The Complete Capitol Recordings of the Nat King Cole Trio
                                       'tag_title'  i never had a chance (l2)
                                             'bpm'  142.9
                                    'search_title'  'a':4 'chance':5 'had':3 'i':1 'l2':6,7 'never':2
                                   'search_artist'  'cole':4 'king':3 'nat':2 'the':1 'trio':5
                                  'search_release'  'capitol':3 'cole':8 'complete':2 'king':7 'nat':6 'of':5 'recordings':4 'the':1 'trio':9
                                     'search_rest'  '192k':6,7 'cd':5 'country':4 'exotica':2 'jazz':1 'jb':9 'oldies':3 'prerock':8 'soft':10 'swing':11
                                    'search_combo'  '192k':27,28 'a':4A 'capitol':15C 'cd':26 'chance':5A 'cole':11B,20C 'complete':14C 'country':25 'exotica':23 'had':3A 'i':1A 'jazz':22 'jb':30 'king':10B,19C 'l2':6A,7A 'nat':9B,18C 'never':2A 'of':17C 'oldies':24 'prerock':29 'recordings':16C 'soft':31 'swing':32 'the':8B,13C 'trio':12B,21C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'jazz', '60s', 'vocal', 'swing']
                                        'tag_date'  1942
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620536511.4469702  (2021-05-09 07:01:51)
                             'size'  4199298