======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '183'
                                          'artist'  'Billy Murray'
                                     'text_people'  ''
                                         'release'  'Victor 16851'
                                           'title'  "That's Why I Never Married"
                                           '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-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['all', 'really really oldies', 'music hall', 'vaudeville', 'real oldies', "
 "'gramophone']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1911'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '107.5'
                                             'key'  '9A'
                                        '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)                     'Victor 16851'
'TBPM' (BPM (beats per minute))                     '107.5'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1911'
'TIT2' (Title/songname/content description)         "That's Why I Never Married"
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '183000'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Murray'
'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'                                   ['all',
 'really really oldies',
 'music hall',
 'vaudeville',
 'real oldies',
 'gramophone']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.01 dB'
'TXXX:replaygain_track_peak'                        '0.696058'

========================== row from database ==========================
                                              'id'  1500628
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1911/Billy Murray - That_s Why I Never Married 1911.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  183
                                           'genre'  prerock-vocal
                                        'filesize'  3699853
                                           'mtime'  1620666086
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1911 That_s 1911 prerock vocal
                                      'tag_artist'  Billy Murray
                                     'tag_release'  Victor 16851
                                       'tag_title'  That's Why I Never Married
                                             'bpm'  107.5
                                    'search_title'  'i':5 'married':7 'never':6 's':2 'that':1 'thats':3 'why':4
                                   'search_artist'  'billy':1 'murray':2
                                  'search_release'  '16851':2 'victor':1
                                     'search_rest'  '00oldiepop':5 '1911':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 's':8 'that':7 'vocal':10
                                    'search_combo'  '00oldiepop':16 '16851':11C '1911':17 'billy':8B 'country':15 'exotica':13 'i':5A 'jazz':12 'married':7A 'murray':9B 'never':6A 'oldies':14 'prerock':20 's':2A,19 'that':1A,18 'thats':3A 'victor':10C 'vocal':21 'why':4A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['all', 'really really oldies', 'music hall', 'vaudeville', 'real oldies', 'gramophone']
                                        'tag_date'  1911
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666086.236998  (2021-05-10 19:01:26)
                             'size'  3699853