======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '171'
                                          'artist'  'Fletcher Henderson'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  'Can You Take It?'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', 'jazz', 'ragtime', '20s', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-soft-swing'
                                             'bpm'  '109.883'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:\r\x11\x00\x00'                  PRIV(owner='AverageLevel', data=b'\r\x11\x00\x00')
'PRIV:PeakValue:H\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'H\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '109.883'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-soft-swing'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Can You Take It?'
'TKEY' (Initial key)                                '11A'
'TLEN' (Length)                                     '171937'
'TPE1' (Lead performer(s)/Soloist(s))               'Fletcher Henderson'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['big band', 'jazz', 'ragtime', '20s', 'swing']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.34 dB'
'TXXX:replaygain_track_peak'                        '0.497202'

========================== row from database ==========================
                                              'id'  1144392
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Fletcher Henderson & His Orchestra - Can You Take It.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  171
                                           'genre'  prerock-jb-jazz-soft-swing
                                        'filesize'  2762752
                                           'mtime'  1620524513
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s & His Orchestra prerock jb jazz soft swing
                                      'tag_artist'  Fletcher Henderson
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  Can You Take It?
                                             'bpm'  109.883
                                    'search_title'  'can':1 'it':4 'take':3 'you':2
                                   'search_artist'  'fletcher':1 'henderson':2
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'country':4 'exotica':2 'his':8 'jazz':1 'jb':11 'oldies':3 'orchestra':9 'prerock':10 'soft':12 'swing':13
                                    'search_combo'  '00oldiepop':15 '1920s':16 '1930s':17 '20s':7C '30s':9C 'and':8C 'can':1A 'country':14 'exotica':12 'fletcher':5B 'henderson':6B 'his':18 'it':4A 'jazz':11 'jb':21 'oldies':13 'orchestra':19 'popular':10C 'prerock':20 'soft':22 'swing':23 'take':3A 'you':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['big band', 'jazz', 'ragtime', '20s', 'swing']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524513.39023  (2021-05-09 03:41:53)
                             'size'  2762752