======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '203'
                                          'artist'  'Artie Shaw & Helen Forrest'
                                     'text_people'  ''
                                         'release'  '1920s and 1930s popular'
                                           'title'  'My Reverie'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'big band', '40s', '50s', '60s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-o-big band'
                                             'bpm'  '115.064'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:/\x15\x00\x00'                   PRIV(owner='AverageLevel', data=b'/\x15\x00\x00')
'PRIV:PeakValue:\x89s\x00\x00'                      PRIV(owner='PeakValue', data=b'\x89s\x00\x00')
'TALB' (Album/Movie/Show title)                     '1920s and 1930s popular'
'TBPM' (BPM (beats per minute))                     '115.064'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-o-big band'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'My Reverie'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '203725'
'TPE1' (Lead performer(s)/Soloist(s))               'Artie Shaw & Helen Forrest'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'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'                                   ['jazz', 'big band', '40s', '50s', '60s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.80 dB'
'TXXX:replaygain_track_peak'                        '0.536713'

========================== row from database ==========================
                                              'id'  1140331
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Artie Shaw, Helen Forrest - My Reverie (1938).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  203
                                           'genre'  prerock-jb-jazz-o-big band
                                        'filesize'  3270657
                                           'mtime'  1620524243
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop Shaw, (1938) prerock jb jazz big band
                                      'tag_artist'  Artie Shaw & Helen Forrest
                                     'tag_release'  1920s and 1930s popular
                                       'tag_title'  My Reverie
                                             'bpm'  115.064
                                    'search_title'  'my':1 'reverie':2
                                   'search_artist'  'artie':1 'forrest':4 'helen':3 'shaw':2
                                  'search_release'  '1920s':1 '1930s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1938':8,9 'band':13 'big':12 'country':4 'exotica':2 'jazz':1 'jb':11 'oldies':3 'prerock':10 'shaw':6,7
                                    'search_combo'  '00oldiepop':15 '1920s':7C '1930s':9C '1938':18,19 'and':8C 'artie':3B 'band':23 'big':22 'country':14 'exotica':12 'forrest':6B 'helen':5B 'jazz':11 'jb':21 'my':1A 'oldies':13 'popular':10C 'prerock':20 'reverie':2A 'shaw':4B,16,17
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'big band', '40s', '50s', '60s']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524242.6364195  (2021-05-09 03:37:22)
                             'size'  3270657