======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '147'
                                          'artist'  'Kay Starr'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Bonaparte's Retreat"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-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-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'female vocalists', '50s', 'oldies', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1950'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '141.6'
                                             'key'  '4B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'GEOB:SfMarkers'                                    GEOB(encoding=<Encoding.LATIN1: 0>, mime='', filename='', desc='SfMarkers', data=b'\x0c\x00\x00\x00d\x00\x00\x00\x00\x00\x00\x00')
'TBPM' (BPM (beats per minute))                     '141.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1950-05-27'
'TIT2' (Title/songname/content description)         "Bonaparte's Retreat"
'TKEY' (Initial key)                                '4B'
'TLEN' (Length)                                     '147000'
'TPE1' (Lead performer(s)/Soloist(s))               'Kay Starr'
'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'                                   ['jazz', 'female vocalists', '50s', 'oldies', 'swing']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.80 dB'
'TXXX:replaygain_track_peak'                        '0.471375'

========================== row from database ==========================
                                              'id'  1508913
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1950/Kay Starr - Bonaparte_s Retreat 27-5-1950.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  147
                                           'genre'  prerock-vocal
                                        'filesize'  2977896
                                           'mtime'  1621853300
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1950 Bonaparte_s 27 5 1950 prerock vocal
                                      'tag_artist'  Kay Starr
                                     'tag_release'  None
                                       'tag_title'  Bonaparte's Retreat
                                             'bpm'  141.6
                                    'search_title'  'bonaparte':1 'bonapartes':3 'retreat':4 's':2
                                   'search_artist'  'kay':1 'starr':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1950':6 '27':9 '5':10 'bonaparte':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':11 's':8 'vocal':12
                                    'search_combo'  '00oldiepop':11 '1950':12 '27':15 '5':16 'bonaparte':1A,13 'bonapartes':3A 'country':10 'exotica':8 'jazz':7 'kay':5B 'oldies':9 'prerock':17 'retreat':4A 's':2A,14 'starr':6B 'vocal':18
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4B
                                           '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-3', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'female vocalists', '50s', 'oldies', 'swing']
                                        'tag_date'  1950
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621853300.1507084  (2021-05-24 12:48:20)
                             'size'  2977896