======================== unified (from filesystem) ========================
                                         'bitrate'  '56.0'
                                        'duration'  '154'
                                          'artist'  'Tommy Dorsey Orch'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  ''
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-3', 'q-chart-2', "
 "'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', 'big band', 'trombone', '40s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1938'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '107.492'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '107.492'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1938'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tommy Dorsey Orch'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'swing', 'big band', 'trombone', '40s']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+3.83 dB'
'TXXX:replaygain_track_peak'                        '0.496838'

========================== row from database ==========================
                                              'id'  1533088
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/tommy dorsey - there_s a boy in harlem 1938.mp3
                                         'working'  None
                                         'bitrate'  56
                                    'duration_sec'  154
                                           'genre'  prerock-unsorted
                                        'filesize'  1089536
                                           'mtime'  1620387846
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection tommy dorsey there_s a boy in harlem 1938 prerock unsorted
                                      'tag_artist'  Tommy Dorsey Orch
                                     'tag_release'  None
                                       'tag_title'  None
                                             'bpm'  107.492
                                    'search_title'  None
                                   'search_artist'  'dorsey':2 'orch':3 'tommy':1
                                  'search_release'  
                                     'search_rest'  '1938':16 '30':5 'a':12 'boy':13 'collection':7 'country':4 'dorsey':9 'exotica':2 'harlem':15 'in':14 'jazz':1 'oldies':3 'prerock':17 's':6,11 'there':10 'tommy':8 'unsorted':18
                                    'search_combo'  '1938':19 '30':8 'a':15 'boy':16 'collection':10 'country':7 'dorsey':2B,12 'exotica':5 'harlem':18 'in':17 'jazz':4 'oldies':6 'orch':3B 'prerock':20 's':9,14 'there':13 'tommy':1B,11 'unsorted':21
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-piano-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'big band', 'trombone', '40s']
                                        'tag_date'  1938
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620387846.3730605  (2021-05-07 13:44:06)
                             'size'  1089536