======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '166'
                                          'artist'  'Billy Murray & Ada Jones'
                                     'text_people'  ''
                                         'release'  'Victor 18205 (18704-3)'
                                           'title'  "If It Wasn't For You"
                                           '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', '1900s', '1909', 'dead', 'retro']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1917'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '94.1'
                                             '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\r\nOriginals from H C .'
'GEOB:SfMarkers'                                    GEOB(encoding=<Encoding.LATIN1: 0>, mime='', filename='', desc='SfMarkers', data=b'\x0c\x00\x00\x00d\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     'Victor 18205 (18704-3)'
'TBPM' (BPM (beats per minute))                     '94.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1917-11-13'
'TIT2' (Title/songname/content description)         "If It Wasn't For You"
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '166000'
'TPE1' (Lead performer(s)/Soloist(s))               'Billy Murray & Ada Jones'
'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', '1900s', '1909', 'dead', 'retro']
'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'                        '+2.58 dB'
'TXXX:replaygain_track_peak'                        '0.560937'

========================== row from database ==========================
                                              'id'  1508714
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1917/Billy Murray & Ada Jones - If It Wasn_t For You 13-11-1917.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  166
                                           'genre'  prerock-vocal
                                        'filesize'  3369650
                                           'mtime'  1620666263
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1917 Wasn_t 13 11 1917 prerock vocal
                                      'tag_artist'  Billy Murray & Ada Jones
                                     'tag_release'  Victor 18205 (18704-3)
                                       'tag_title'  If It Wasn't For You
                                             'bpm'  94.1
                                    'search_title'  'for':6 'if':1 'it':2 't':4 'wasn':3 'wasnt':5 'you':7
                                   'search_artist'  'ada':3 'billy':1 'jones':4 'murray':2
                                  'search_release'  '18205':2 '18704':3 '187043':5 '3':4 'victor':1
                                     'search_rest'  '00oldiepop':5 '1917':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 't':8 'vocal':10 'wasn':7
                                    'search_combo'  '00oldiepop':21 '18205':13C '18704':14C '187043':16C '1917':22 '3':15C 'ada':10B 'billy':8B 'country':20 'exotica':18 'for':6A 'if':1A 'it':2A 'jazz':17 'jones':11B 'murray':9B 'oldies':19 'prerock':25 't':4A,24 'victor':12C 'vocal':26 'wasn':3A,23 'wasnt':5A 'you':7A
                                    '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['all', '1900s', '1909', 'dead', 'retro']
                                        'tag_date'  1917
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666262.8363495  (2021-05-10 19:04:22)
                             'size'  3369650