======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '212'
                                          'artist'  'Billy Mayerl'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Mistletoe (Billy Mayerl 1935) (played by Johan Otten 1967)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-vocals-1', 'q-mixbeat-1', "
 "'Q-PIANO-4']")
                                      'lastfmtags'  "['piano', '20th century classical', 'british', 'classical', 'all']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-ragtime'
                                             'bpm'  '123.7'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '123.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-ragtime'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'Mistletoe (Billy Mayerl 1935) (played by Johan Otten 1967)'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Mayerl'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['piano', '20th century classical', 'british', 'classical', 'all']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.56 dB'
'TXXX:replaygain_track_peak'                        '0.757694'

========================== row from database ==========================
                                              'id'  1460918
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1935/Billy Mayerl - Mistletoe 1935.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  212
                                           'genre'  prerock-ragtime
                                        'filesize'  4330130
                                           'mtime'  1620573936
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop prerock ragtime
                                      'tag_artist'  Billy Mayerl
                                     'tag_release'  None
                                       'tag_title'  Mistletoe (Billy Mayerl 1935) (played by Johan Otten 1967)
                                             'bpm'  123.7
                                    'search_title'  '1935':5,6 '1967':12,13 'billy':2,3 'by':9 'johan':10 'mayerl':4 'mistletoe':1 'otten':11 'played':7,8
                                   'search_artist'  'billy':1 'mayerl':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':6 'ragtime':7
                                    'search_combo'  '00oldiepop':20 '1935':5A,6A '1967':12A,13A 'billy':2A,3A,14B 'by':9A 'country':19 'exotica':17 'jazz':16 'johan':10A 'mayerl':4A,15B 'mistletoe':1A 'oldies':18 'otten':11A 'played':7A,8A 'prerock':21 'ragtime':22
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['piano', '20th century classical', 'british', 'classical', 'all']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620573936.046441  (2021-05-09 17:25:36)
                             'size'  4330130