======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '495'
                                          'artist'  'New Mayfair Orchestra (dir Percival Mackey)'
                                     'text_people'  ''
                                         'release'  'HMV C 2738'
                                           'title'  'Jubilee Dance Memories'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '137.1'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TALB' (Album/Movie/Show title)                     'HMV C 2738'
'TBPM' (BPM (beats per minute))                     '137.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1935-02-05'
'TIT2' (Title/songname/content description)         'Jubilee Dance Memories'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '495000'
'TPE1' (Lead performer(s)/Soloist(s))               'New Mayfair Orchestra (dir Percival Mackey)'
'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:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.39 dB'
'TXXX:replaygain_track_peak'                        '0.637173'

========================== row from database ==========================
                                              'id'  1460149
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1935/New Mayfair Dance Orchestra - Jubilee Dance Memories (dir Percival Mackey) 5-2-1935.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  495
                                           'genre'  prerock-band
                                        'filesize'  9950371
                                           'mtime'  1620560377
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1935 5 1935 prerock band
                                      'tag_artist'  New Mayfair Orchestra (dir Percival Mackey)
                                     'tag_release'  HMV C 2738
                                       'tag_title'  Jubilee Dance Memories
                                             'bpm'  137.1
                                    'search_title'  'dance':2 'jubilee':1 'memories':3
                                   'search_artist'  'dir':4,5 'mackey':7,8 'mayfair':2 'new':1 'orchestra':3 'percival':6
                                  'search_release'  '2738':3 'c':2 'hmv':1
                                     'search_rest'  '00oldiepop':5 '1935':6 '5':7 'band':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8
                                    'search_combo'  '00oldiepop':19 '1935':20 '2738':14C '5':21 'band':23 'c':13C 'country':18 'dance':2A 'dir':7B,8B 'exotica':16 'hmv':12C 'jazz':15 'jubilee':1A 'mackey':10B,11B 'mayfair':5B 'memories':3A 'new':4B 'oldies':17 'orchestra':6B 'percival':9B 'prerock':22
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', '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-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560377.23235  (2021-05-09 13:39:37)
                             'size'  9950371