======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '193'
                                          'artist'  'Jimmy Lunceford'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'My Blue Heaven'
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                                      'lastfmtags'  "['swing', 'jazz', 'big band', 'saxophone', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '85.3'
                                             'key'  '8A'
                                        '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))                     '85.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1935-12-23'
'TIT2' (Title/songname/content description)         'My Blue Heaven'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '193000'
'TPE1' (Lead performer(s)/Soloist(s))               'Jimmy Lunceford'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['swing', 'jazz', 'big band', 'saxophone', 'blues']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '+2.22 dB'
'TXXX:replaygain_track_peak'                        '0.906366'

========================== row from database ==========================
                                              'id'  1473879
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1935/Jimmy Lunceford - My Blue Heaven 23-12-1935.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  193
                                           'genre'  prerock-unsorted
                                        'filesize'  3922276
                                           'mtime'  1620386263
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1935 23 12 1935 prerock unsorted
                                      'tag_artist'  Jimmy Lunceford
                                     'tag_release'  None
                                       'tag_title'  My Blue Heaven
                                             'bpm'  85.3
                                    'search_title'  'blue':2 'heaven':3 'my':1
                                   'search_artist'  'jimmy':1 'lunceford':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1935':6 '23':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':10 '1935':11 '23':12 'blue':2A 'country':9 'exotica':7 'heaven':3A 'jazz':6 'jimmy':4B 'lunceford':5B 'my':1A 'oldies':8 'prerock':13 'unsorted':14
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           '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-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['swing', 'jazz', 'big band', 'saxophone', 'blues']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620386263.081113  (2021-05-07 13:17:43)
                             'size'  3922276