======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '176'
                                          'artist'  'Billy Golden'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'Listen To The Mocking Bird'
                                           '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-3', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-instrumental;mi-whistling'
                                             'bpm'  '121.701'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '121.701'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-instrumental', 'mi-whistling']
'TDRC' (Recording time)                             '1950'
'TIT2' (Title/songname/content description)         'Listen To The Mocking Bird'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Golden'
'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'                                      '3'
'TXXX:q-grit'                                       '1'
'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'                        '+2.03 dB'
'TXXX:replaygain_track_peak'                        '0.553055'

========================== row from database ==========================
                                              'id'  1438777
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1800/Billy Golden - Listen To The Mocking Bird 1897.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  176
                                           'genre'  prerock-instrumental;mi-whistling
                                        'filesize'  3524270
                                           'mtime'  1620527927
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1800 1897 prerock instrumental;mi whistling
                                      'tag_artist'  Billy Golden
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  Listen To The Mocking Bird
                                             'bpm'  121.701
                                    'search_title'  'bird':5 'listen':1 'mocking':4 'the':3 'to':2
                                   'search_artist'  'billy':1 'golden':2
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1800':6 '1897':7 'country':4 'exotica':2 'instrumental':9,11 'jazz':1 'mi':10,12 'oldies':3 'prerock':8 'whistling':13
                                    'search_combo'  '00oldiepop':17 '1800':18 '1897':19 'album':9C 'billy':6B 'bird':5A 'country':16 'exotica':14 'golden':7B 'instrumental':21,23 'jazz':13 'listen':1A 'mi':22,24 'mocking':4A 'non':8C 'nonalbum':10C 'oldies':15 'prerock':20 'the':3A 'to':2A 'tracks':11C,12C 'whistling':25
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             '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-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['q-chart-1', 'q-drums-3', 'q-vocals-4', 'q-other-3', 'q-busy-3', 'q-mixbeat-1', 'q-syn-1', 'q-play-2', 'q-piano-1', 'q-bass-1', 'q-grit-1']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527926.6509104  (2021-05-09 04:38:46)
                             'size'  3524270