======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '160'
                                          'artist'  'Patty Andrews'
                                     'text_people'  ''
                                         'release'  'Decca M 33206'
                                           'title'  'Too Young'
                                           '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-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['swing', 'lesser known yet streamable artists', 'under 2000 listeners', "
 "'kids', 'children']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1951'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '144.233'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca M 33206'
'TBPM' (BPM (beats per minute))                     '144.233'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1951'
'TIT2' (Title/songname/content description)         'Too Young'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'Patty Andrews'
'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:lastfmtags'                                   ['swing',
 'lesser known yet streamable artists',
 'under 2000 listeners',
 'kids',
 'children']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.62 dB'
'TXXX:replaygain_track_peak'                        '0.529614'

========================== row from database ==========================
                                              'id'  1427616
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1951/Patty Andrews - Too Young 16-6-1951.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  160
                                           'genre'  prerock-unsorted
                                        'filesize'  3219413
                                           'mtime'  1621698143
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1951 16 1951 prerock unsorted
                                      'tag_artist'  Patty Andrews
                                     'tag_release'  Decca M 33206
                                       'tag_title'  Too Young
                                             'bpm'  144.233
                                    'search_title'  'too':1 'young':2
                                   'search_artist'  'andrews':2 'patty':1
                                  'search_release'  '33206':3 'decca':1 'm':2
                                     'search_rest'  '00oldiepop':5 '1951':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7 'unsorted':8
                                    'search_combo'  '00oldiepop':12 '1951':13 '33206':7C 'andrews':4B 'country':11 'decca':5C 'exotica':9 'jazz':8 'm':6C 'oldies':10 'patty':3B 'prerock':14 'too':1A 'unsorted':15 'young':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7B
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['swing', 'lesser known yet streamable artists', 'under 2000 listeners', 'kids', 'children']
                                        'tag_date'  1951
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698142.8718834  (2021-05-22 17:42:22)
                             'size'  3219413