======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '142'
                                          'artist'  'Billy Vaughn & His Orchestra'
                                     'text_people'  ''
                                         'release'  'album'
                                           'title'  'The Ship That Never Sailed'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', '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'  "['instrumental', 'swing', 'oldies', 'myhits', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '471'
                                      'tracktotal'  ''
                                            'date'  '1957'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '128.170'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'TALB' (Album/Movie/Show title)                     'album'
'TBPM' (BPM (beats per minute))                     '128.170'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1957'
'TIT2' (Title/songname/content description)         'The Ship That Never Sailed'
'TKEY' (Initial key)                                '10B'
'TLEN' (Length)                                     '142080'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Vaughn & His Orchestra'
'TRCK' (Track number/Position in set)               '471'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'swing', 'oldies', 'myhits', 'easy listening']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'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'                        '+0.12 dB'
'TXXX:replaygain_track_peak'                        '0.514191'

========================== row from database ==========================
                                              'id'  1431641
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1957/57-471 - Billy Vaughn & His Orchestra - The Ship That Never Sailed.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  142
                                           'genre'  prerock-swing
                                        'filesize'  5685248
                                           'mtime'  1620562651
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1957 57 471 prerock swing
                                      'tag_artist'  Billy Vaughn & His Orchestra
                                     'tag_release'  album
                                       'tag_title'  The Ship That Never Sailed
                                             'bpm'  128.17
                                    'search_title'  'never':4 'sailed':5 'ship':2 'that':3 'the':1
                                   'search_artist'  'billy':1 'his':3 'orchestra':4 'vaughn':2
                                  'search_release'  'album':1
                                     'search_rest'  '00oldiepop':5 '1957':6 '471':8 '57':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'swing':10
                                    'search_combo'  '00oldiepop':15 '1957':16 '471':18 '57':17 'album':10C 'billy':6B 'country':14 'exotica':12 'his':8B 'jazz':11 'never':4A 'oldies':13 'orchestra':9B 'prerock':19 'sailed':5A 'ship':2A 'swing':20 'that':3A 'the':1A 'vaughn':7B
                                    'tag_tracknum'  471
                                      'num_images'  1
                                             'key'  10B
                                           '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-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'swing', 'oldies', 'myhits', 'easy listening']
                                        'tag_date'  1957
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562650.535305  (2021-05-09 14:17:30)
                             'size'  5685248