======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '168'
                                          'artist'  'Walter van Brunt'
                                     'text_people'  ''
                                         'release'  'Victor 17130'
                                           'title'  "Mary Was My Mother's Name (+ American Quartet)"
                                           '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-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1912'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '107.7'
                                             'key'  '7B'
                                        '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 17130'
'TBPM' (BPM (beats per minute))                     '107.7'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1912-03-13'
'TIT2' (Title/songname/content description)         "Mary Was My Mother's Name (+ American Quartet)"
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '168000'
'TPE1' (Lead performer(s)/Soloist(s))               'Walter van Brunt'
'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'                                      '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'                        '+1.26 dB'
'TXXX:replaygain_track_peak'                        '0.472569'

========================== row from database ==========================
                                              'id'  1517527
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1912/Walter van Brunt - Mary Was My Mother_s Name (+ American Quartet) 13-3-1912.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  168
                                           'genre'  prerock-vocal
                                        'filesize'  3407653
                                           'mtime'  1620666137
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1912 Mother_s 1912 prerock vocal
                                      'tag_artist'  Walter van Brunt
                                     'tag_release'  Victor 17130
                                       'tag_title'  Mary Was My Mother's Name (+ American Quartet)
                                             'bpm'  107.7
                                    'search_title'  'american':8 'mary':1 'mother':4 'mothers':6 'my':3 'name':7 'quartet':9,10 's':5 'was':2
                                   'search_artist'  'brunt':3 'van':2 'walter':1
                                  'search_release'  '17130':2 'victor':1
                                     'search_rest'  '00oldiepop':5 '1912':6 'country':4 'exotica':2 'jazz':1 'mother':7 'oldies':3 'prerock':9 's':8 'vocal':10
                                    'search_combo'  '00oldiepop':20 '17130':15C '1912':21 'american':8A 'brunt':13B 'country':19 'exotica':17 'jazz':16 'mary':1A 'mother':4A,22 'mothers':6A 'my':3A 'name':7A 'oldies':18 'prerock':24 'quartet':9A,10A 's':5A,23 'van':12B 'victor':14C 'vocal':25 'walter':11B 'was':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1912
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666137.2593858  (2021-05-10 19:02:17)
                             'size'  3407653