======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '198'
                                          'artist'  'Bunny Berigan & His Boys'
                                     'text_people'  ''
                                         'release'  "1930's rare and popular music"
                                           'title'  'Blues'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', 'trumpet', 'big band', '30s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '108.008'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     "1930's rare and popular music"
'TBPM' (BPM (beats per minute))                     '108.008'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Blues'
'TKEY' (Initial key)                                '10B'
'TLEN' (Length)                                     '198320'
'TPE1' (Lead performer(s)/Soloist(s))               'Bunny Berigan & His Boys'
'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'                                   ['jazz', 'swing', 'trumpet', 'big band', '30s']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.10 dB'
'TXXX:replaygain_track_peak'                        '0.598377'

========================== row from database ==========================
                                              'id'  1144270
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Bunny Berigan - Blues (1935).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  198
                                           'genre'  prerock-band
                                        'filesize'  3194922
                                           'mtime'  1620559760
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s (1935) prerock band
                                      'tag_artist'  Bunny Berigan & His Boys
                                     'tag_release'  1930's rare and popular music
                                       'tag_title'  Blues
                                             'bpm'  108.008
                                    'search_title'  'blues':1
                                   'search_artist'  'berigan':2 'boys':4 'bunny':1 'his':3
                                  'search_release'  '1930':1 '1930s':3 'and':5 'music':7 'popular':6 'rare':4 's':2
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 '1935':8,9 'band':11 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':10
                                    'search_combo'  '00oldiepop':17 '1920s':18 '1930':6C '1930s':8C,19 '1935':20,21 'and':10C 'band':23 'berigan':3B 'blues':1A 'boys':5B 'bunny':2B 'country':16 'exotica':14 'his':4B 'jazz':13 'music':12C 'oldies':15 'popular':11C 'prerock':22 'rare':9C 's':7C
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'trumpet', 'big band', '30s']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559759.7201648  (2021-05-09 13:29:19)
                             'size'  3194922