======================== unified (from filesystem) ========================
                                         'bitrate'  '80.0'
                                        'duration'  '192'
                                          'artist'  'Nat King Cole'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  '"Christmas Song (Merry Christmas to You), The"'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'jazz', 'jazz vocal', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1953'
                                        'comments'  ''
                                           'genre'  'prerock-swing;set-th-christmas'
                                             'bpm'  '135.819'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '135.819'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-swing', 'set-th-christmas']
'TDRC' (Recording time)                             '1953'
'TIT2' (Title/songname/content description)         '"Christmas Song (Merry Christmas to You), The"'
'TKEY' (Initial key)                                '4B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nat King Cole'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues', 'jazz', 'jazz vocal', 'oldies', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.20 dB'
'TXXX:replaygain_track_peak'                        '0.787761'
'UFID:'                                             UFID(owner='', data=b'XL\x00 CH1953_014')

========================== row from database ==========================
                                              'id'  1513939
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1953/ch1953_014 - __nat ____king____ cole__ - __christmas song (merry christmas to you), the__ 80 m (3.13).mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  192
                                           'genre'  prerock-swing;set-th-christmas
                                        'filesize'  1929225
                                           'mtime'  1674646564
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1953 ch1953_014 __nat ____king____ cole__ __christmas song (merry christmas you), the__ 80 (3.13) prerock swing;set th christmas
                                      'tag_artist'  Nat King Cole
                                     'tag_release'  None
                                       'tag_title'  "Christmas Song (Merry Christmas to You), The"
                                             'bpm'  135.819
                                    'search_title'  'christmas':1,5 'merry':3,4 'song':2 'the':9 'to':6 'you':7,8
                                   'search_artist'  'cole':3 'king':2 'nat':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '014':8 '13':22 '1953':6 '3':21 '313':23 '80':20 'ch1953':7 'christmas':12,16 'cole':11 'country':4 'exotica':2 'jazz':1 'king':10 'merry':14,15 'nat':9 'oldies':3 'prerock':24 'set':26,28 'song':13 'swing':25,27 'th':29 'the':19 'you':17,18
                                    'search_combo'  '00oldiepop':17 '014':20 '13':34 '1953':18 '3':33 '313':35 '80':32 'ch1953':19 'christmas':1A,5A,24,28 'cole':12B,23 'country':16 'exotica':14 'jazz':13 'king':11B,22 'merry':3A,4A,26,27 'nat':10B,21 'oldies':15 'prerock':36 'set':38,40 'song':2A,25 'swing':37,39 'th':41 'the':9A,31 'to':6A 'you':7A,8A,29,30
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4B
                                           'quals'  ['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['blues', 'jazz', 'jazz vocal', 'oldies', 'swing']
                                        'tag_date'  1953
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1674646564.2252946  (2023-01-25 12:36:04)
                             'size'  1929225