======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '187'
                                          'artist'  'Fred Rich'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Dixie Jamboree (vocal Rollickers) 15-11-1929'
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                                      'lastfmtags'  "['spotify', 'all', 'jazz']"
                                     'discogstags'  "['jazz', 'pop', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1929'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '106.4'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '106.4'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1929'
'TIT2' (Title/songname/content description)         'Dixie Jamboree (vocal Rollickers) 15-11-1929'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '187000'
'TPE1' (Lead performer(s)/Soloist(s))               'Fred Rich'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'pop', 'vocal']
'TXXX:lastfmtags'                                   ['spotify', 'all', 'jazz']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+3.15 dB'
'TXXX:replaygain_track_peak'                        '0.664886'

========================== row from database ==========================
                                              'id'  1469012
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1929/Fred Rich - Dixie Jamboree (vocal - Rollickers) 15-11-1929.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  187
                                           'genre'  prerock-unsorted
                                        'filesize'  3787543
                                           'mtime'  1620385782
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop prerock unsorted
                                      'tag_artist'  Fred Rich
                                     'tag_release'  None
                                       'tag_title'  Dixie Jamboree (vocal Rollickers) 15-11-1929
                                             'bpm'  106.4
                                    'search_title'  '11':8 '15':7 '15111929':10 '1929':9 'dixie':1 'jamboree':2 'rollickers':5,6 'vocal':3,4
                                   'search_artist'  'fred':1 'rich':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':6 'unsorted':7
                                    'search_combo'  '00oldiepop':17 '11':8A '15':7A '15111929':10A '1929':9A 'country':16 'dixie':1A 'exotica':14 'fred':11B 'jamboree':2A 'jazz':13 'oldies':15 'prerock':18 'rich':12B 'rollickers':5A,6A 'unsorted':19 'vocal':3A,4A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['spotify', 'all', 'jazz']
                                        'tag_date'  1929
                                     'discogstags'  ['jazz', 'pop', 'vocal']

============================== file details ==============================
                                           'mtime'  1620385782.4163527  (2021-05-07 13:09:42)
                             'size'  3787543