======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '201'
                                          'artist'  'Billy Murray & his Merry Melody Men'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'Mystery'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1920'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '93.7'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '93.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1920-02'
'TIT2' (Title/songname/content description)         'Mystery'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '201000'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Murray & his Merry Melody Men'
'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:q-bass'                                       '1'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.33 dB'
'TXXX:replaygain_track_peak'                        '0.455033'

========================== row from database ==========================
                                              'id'  1466734
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920/Billy Murray & His Merry Melody Men - Mystery -2-1920.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  201
                                           'genre'  prerock-vocal
                                        'filesize'  4074956
                                           'mtime'  1620666320
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920 His 2 1920 prerock vocal
                                      'tag_artist'  Billy Murray & his Merry Melody Men
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  Mystery
                                             'bpm'  93.7
                                    'search_title'  'mystery':1
                                   'search_artist'  'billy':1 'his':3 'melody':5 'men':6 'merry':4 'murray':2
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1920':6 '2':8 'country':4 'exotica':2 'his':7 'jazz':1 'oldies':3 'prerock':9 'vocal':10
                                    'search_combo'  '00oldiepop':17 '1920':18 '2':20 'album':9C 'billy':2B 'country':16 'exotica':14 'his':4B,19 'jazz':13 'melody':6B 'men':7B 'merry':5B 'murray':3B 'mystery':1A 'non':8C 'nonalbum':10C 'oldies':15 'prerock':21 'tracks':11C,12C 'vocal':22
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1920
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666320.2194748  (2021-05-10 19:05:20)
                             'size'  4074956