======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '123'
                                          'artist'  'Edison Military Band'
                                     'text_people'  ''
                                         'release'  'Edison  9829'
                                           'title'  "Under Freedom's Flag"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', '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-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['1900s', 'all', 'edison records', 'cylinder', '78s']"
                                     'discogstags'  "['brass & military']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1908'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '118.4'
                                             'key'  '3A'
                                        '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)                     'Edison  9829'
'TBPM' (BPM (beats per minute))                     '118.4'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1908'
'TIT2' (Title/songname/content description)         "Under Freedom's Flag"
'TKEY' (Initial key)                                '3A'
'TLEN' (Length)                                     '123000'
'TPE1' (Lead performer(s)/Soloist(s))               'Edison Military Band'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'brass & military'
'TXXX:lastfmtags'                                   ['1900s', 'all', 'edison records', 'cylinder', '78s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'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'                        '+0.25 dB'
'TXXX:replaygain_track_peak'                        '0.773343'

========================== row from database ==========================
                                              'id'  1516752
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1908/Edison Military Band - Under Freedom_s Flag 1908.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  123
                                           'genre'  prerock-band
                                        'filesize'  2536407
                                           'mtime'  1620558733
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1908 Freedom_s 1908 prerock band
                                      'tag_artist'  Edison Military Band
                                     'tag_release'  Edison  9829
                                       'tag_title'  Under Freedom's Flag
                                             'bpm'  118.4
                                    'search_title'  'flag':5 'freedom':2 'freedoms':4 's':3 'under':1
                                   'search_artist'  'band':3 'edison':1 'military':2
                                  'search_release'  '9829':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1908':6 'band':10 'country':4 'exotica':2 'freedom':7 'jazz':1 'oldies':3 'prerock':9 's':8
                                    'search_combo'  '00oldiepop':15 '1908':16 '9829':10C 'band':8B,20 'country':14 'edison':6B,9C 'exotica':12 'flag':5A 'freedom':2A,17 'freedoms':4A 'jazz':11 'military':7B 'oldies':13 'prerock':19 's':3A,18 'under':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  3A
                                           '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-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['1900s', 'all', 'edison records', 'cylinder', '78s']
                                        'tag_date'  1908
                                     'discogstags'  ['brass & military']

============================== file details ==============================
                                           'mtime'  1620558733.0597703  (2021-05-09 13:12:13)
                             'size'  2536407