======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '93'
                                          'artist'  'Al Bowlly'
                                     'text_people'  ''
                                         'release'  'Columbia DX 499'
                                           'title'  "You'll Never Understand (in Eddie Pola's ' America Calling ' Medley)"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', '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'  "['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1933'
                                        'comments'  ''
                                           'genre'  'prerock-vocal;prerock-jb-jazz-vocal'
                                             'bpm'  '136.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'Columbia DX 499'
'TBPM' (BPM (beats per minute))                     '136.3'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-vocal', 'prerock-jb-jazz-vocal']
'TDRC' (Recording time)                             '1933-07-25'
'TIT2' (Title/songname/content description)         "You'll Never Understand (in Eddie Pola's ' America Calling ' Medley)"
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '93000'
'TPE1' (Lead performer(s)/Soloist(s))               'Al Bowlly'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']
'TXXX:q-bass'                                       '1'
'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'                        '+0.95 dB'
'TXXX:replaygain_track_peak'                        '0.867179'

========================== row from database ==========================
                                              'id'  1515028
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1933/Al Bowlly - You_ll Never Understand (in Eddie Pola_s _ America Calling _ Medley) 25-7-1933.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  93
                                           'genre'  prerock-vocal;prerock-jb-jazz-vocal
                                        'filesize'  1929678
                                           'mtime'  1620525908
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1933 You_ll Pola_s _ _ 25 7 1933 prerock vocal;prerock jb jazz vocal
                                      'tag_artist'  Al Bowlly
                                     'tag_release'  Columbia DX 499
                                       'tag_title'  You'll Never Understand (in Eddie Pola's ' America Calling ' Medley)
                                             'bpm'  136.3
                                    'search_title'  'america':12 'calling':13 'eddie':8 'in':6,7 'll':2 'medley':14,15 'never':4 'pola':9 'polas':11 's':10 'understand':5 'you':1 'youll':3
                                   'search_artist'  'al':1 'bowlly':2
                                  'search_release'  '499':3 'columbia':1 'dx':2
                                     'search_rest'  '00oldiepop':5 '1933':6 '25':11 '7':12 'country':4 'exotica':2 'jazz':1 'jb':18 'll':8 'oldies':3 'pola':9 'prerock':13,15,17 's':10 'vocal':14,16,19 'you':7
                                    'search_combo'  '00oldiepop':25 '1933':26 '25':31 '499':20C '7':32 'al':16B 'america':12A 'bowlly':17B 'calling':13A 'columbia':18C 'country':24 'dx':19C 'eddie':8A 'exotica':22 'in':6A,7A 'jazz':21 'jb':38 'll':2A,28 'medley':14A,15A 'never':4A 'oldies':23 'pola':9A,29 'polas':11A 'prerock':33,35,37 's':10A,30 'understand':5A 'vocal':34,36,39 'you':1A,27 'youll':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['30s', 'oldies', 'jazz', 'pop', '1930s', 'crooner']
                                        'tag_date'  1933
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620525907.768057  (2021-05-09 04:05:07)
                             'size'  1929678