======================== unified (from filesystem) ========================
                                         'bitrate'  '96.0'
                                        'duration'  '191'
                                          'artist'  'Bing Crosby'
                                     'text_people'  ''
                                         'release'  'Bing Crosby'
                                           'title'  'Two Cigarettes In The Dark'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['crooners', 'jazz', 'christmas', 'oldies', 'swing']"
                                     'discogstags'  "['pop', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal'
                                             'bpm'  '142.508'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'Debuted 11/3/1934 and peaked at #5 on Various Charts. Source: Pop Memories'
'COMM:ID3v1 Comment:XXX'                            'Debuted 11/3/1934 and peaked'
'TALB' (Album/Movie/Show title)                     'Bing Crosby'
'TBPM' (BPM (beats per minute))                     '142.508'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-vocal'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         'Two Cigarettes In The Dark'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bing Crosby'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop', 'vocal']
'TXXX:lastfmtags'                                   ['crooners', 'jazz', 'christmas', 'oldies', 'swing']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.64 dB'
'TXXX:replaygain_track_peak'                        '0.690989'

========================== row from database ==========================
                                              'id'  1455793
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1934/Two cigarettes in the dark - Bing Crosby.mp3
                                         'working'  None
                                         'bitrate'  96
                                    'duration_sec'  191
                                           'genre'  prerock-jb-jazz-vocal
                                        'filesize'  2305922
                                           'mtime'  1620526186
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1934 cigarettes the dark prerock jb jazz vocal
                                      'tag_artist'  Bing Crosby
                                     'tag_release'  Bing Crosby
                                       'tag_title'  Two Cigarettes In The Dark
                                             'bpm'  142.508
                                    'search_title'  'cigarettes':2 'dark':5 'in':3 'the':4 'two':1
                                   'search_artist'  'bing':1 'crosby':2
                                  'search_release'  'bing':1 'crosby':2
                                     'search_rest'  '00oldiepop':5 '1934':6 'cigarettes':7 'country':4 'dark':9 'exotica':2 'jazz':1 'jb':11 'oldies':3 'prerock':10 'the':8 'vocal':12
                                    'search_combo'  '00oldiepop':14 '1934':15 'bing':6B,8C 'cigarettes':2A,16 'country':13 'crosby':7B,9C 'dark':5A,18 'exotica':11 'in':3A 'jazz':10 'jb':20 'oldies':12 'prerock':19 'the':4A,17 'two':1A 'vocal':21
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', '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-2', 'q-other-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['crooners', 'jazz', 'christmas', 'oldies', 'swing']
                                        'tag_date'  1934
                                     'discogstags'  ['pop', 'vocal']

============================== file details ==============================
                                           'mtime'  1620526185.7378561  (2021-05-09 04:09:45)
                             'size'  2305922