======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '181'
                                          'artist'  'Dick Haymes'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "I'll Buy That Dream (+ Helen Forrest)"
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-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-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['male vocalists', 'jazz', '40s', 'oldies', 'crooners']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '135.004'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '135.004'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         "I'll Buy That Dream (+ Helen Forrest)"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dick Haymes'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['male vocalists', 'jazz', '40s', 'oldies', 'crooners']
'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'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.41 dB'
'TXXX:replaygain_track_peak'                        '0.479336'

========================== row from database ==========================
                                              'id'  1496842
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1945/Dick Haymes - I_ll Buy That Dream (+ Helen Forrest) 1-3-1945.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  181
                                           'genre'  prerock-vocal
                                        'filesize'  3622715
                                           'mtime'  1642081168
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1945 I_ll 1 3 1945 prerock vocal
                                      'tag_artist'  Dick Haymes
                                     'tag_release'  None
                                       'tag_title'  I'll Buy That Dream (+ Helen Forrest)
                                             'bpm'  135.004
                                    'search_title'  'buy':4 'dream':6 'forrest':8,9 'helen':7 'i':1 'ill':3 'll':2 'that':5
                                   'search_artist'  'dick':1 'haymes':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1':9 '1945':6 '3':10 'country':4 'exotica':2 'i':7 'jazz':1 'll':8 'oldies':3 'prerock':11 'vocal':12
                                    'search_combo'  '00oldiepop':16 '1':20 '1945':17 '3':21 'buy':4A 'country':15 'dick':10B 'dream':6A 'exotica':13 'forrest':8A,9A 'haymes':11B 'helen':7A 'i':1A,18 'ill':3A 'jazz':12 'll':2A,19 'oldies':14 'prerock':22 'that':5A 'vocal':23
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HAP-2', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-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-1', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['male vocalists', 'jazz', '40s', 'oldies', 'crooners']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1642081168.4473927  (2022-01-13 14:39:28)
                             'size'  3622715