======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '155'
                                          'artist'  'George Hall Orchestra'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Sing A Song Of Nonsense'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1937'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '113.5'
                                             'key'  '3A'
                                        '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))                     '113.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1937'
'TIT2' (Title/songname/content description)         'Sing A Song Of Nonsense'
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '155000'
'TPE1' (Lead performer(s)/Soloist(s))               'George Hall Orchestra'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.14 dB'
'TXXX:replaygain_track_peak'                        '0.446155'

========================== row from database ==========================
                                              'id'  1474153
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1937/George Hall - Sing A Song Of Nonsense 1937.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  155
                                           'genre'  prerock-band
                                        'filesize'  3216804
                                           'mtime'  1620560534
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1937 1937 prerock band
                                      'tag_artist'  George Hall Orchestra
                                     'tag_release'  None
                                       'tag_title'  Sing A Song Of Nonsense
                                             'bpm'  113.5
                                    'search_title'  'a':2 'nonsense':5 'of':4 'sing':1 'song':3
                                   'search_artist'  'george':1 'hall':2 'orchestra':3
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1937':6 'band':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7
                                    'search_combo'  '00oldiepop':13 '1937':14 'a':2A 'band':16 'country':12 'exotica':10 'george':6B 'hall':7B 'jazz':9 'nonsense':5A 'of':4A 'oldies':11 'orchestra':8B 'prerock':15 'sing':1A 'song':3A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1937
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560533.5051908  (2021-05-09 13:42:13)
                             'size'  3216804