======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '190'
                                          'artist'  'Rosemary Clooney'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "You'll Never Know (+ Harry James)"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', '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'  "['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1953'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '139.9'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'COMM:MusicMatch_Tempo:eng'                         'None'
'TBPM' (BPM (beats per minute))                     '139.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1953-01-10'
'TIT2' (Title/songname/content description)         "You'll Never Know (+ Harry James)"
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '190000'
'TPE1' (Lead performer(s)/Soloist(s))               'Rosemary Clooney'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'oldies']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'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'                        '+1.49 dB'
'TXXX:replaygain_track_peak'                        '0.541398'

========================== row from database ==========================
                                              'id'  1519891
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1953/Rosemary Clooney - You_ll Never Know (+ Harry James) 10-1-1953.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  190
                                           'genre'  prerock-vocal
                                        'filesize'  3865057
                                           'mtime'  1621853320
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1953 You_ll 10 1 1953 prerock vocal
                                      'tag_artist'  Rosemary Clooney
                                     'tag_release'  None
                                       'tag_title'  You'll Never Know (+ Harry James)
                                             'bpm'  139.9
                                    'search_title'  'harry':6 'james':7,8 'know':5 'll':2 'never':4 'you':1 'youll':3
                                   'search_artist'  'clooney':2 'rosemary':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1':9 '1953':6 'country':4 'exotica':2 'jazz':1 'll':8 'oldies':3 'prerock':10 'vocal':11 'you':7
                                    'search_combo'  '00oldiepop':15 '1':19 '1953':16 'clooney':10B 'country':14 'exotica':12 'harry':6A 'james':7A,8A 'jazz':11 'know':5A 'll':2A,18 'never':4A 'oldies':13 'prerock':20 'rosemary':9B 'vocal':21 'you':1A,17 'youll':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['vocal jazz', 'jazz vocal', 'jazz', 'female vocalists', 'oldies']
                                        'tag_date'  1953
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853320.2984219  (2021-05-24 12:48:40)
                             'size'  3865057