======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '151'
                                          'artist'  'Victor Military Band'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'United Empire March'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ragtime', '30s', 'all', '20s', 'acoustic era']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1916'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '115.1'
                                             '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'
'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '115.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1916-02-29'
'TIT2' (Title/songname/content description)         'United Empire March'
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '151000'
'TPE1' (Lead performer(s)/Soloist(s))               'Victor 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:lastfmtags'                                   ['ragtime', '30s', 'all', '20s', 'acoustic era']
'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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.61 dB'
'TXXX:replaygain_track_peak'                        '0.486087'

========================== row from database ==========================
                                              'id'  1461745
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1916/Victor Military Band - United Empire March 29-21916.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  151
                                           'genre'  prerock-band
                                        'filesize'  3074907
                                           'mtime'  1620559573
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1916 29 21916 prerock band
                                      'tag_artist'  Victor Military Band
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  United Empire March
                                             'bpm'  115.1
                                    'search_title'  'empire':2 'march':3 'united':1
                                   'search_artist'  'band':3 'military':2 'victor':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '00oldiepop':5 '1916':6 '21916':8 '29':7 'band':10 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9
                                    'search_combo'  '00oldiepop':16 '1916':17 '21916':19 '29':18 'album':8C 'band':6B,21 'country':15 'empire':2A 'exotica':13 'jazz':12 'march':3A 'military':5B 'non':7C 'nonalbum':9C 'oldies':14 'prerock':20 'tracks':10C,11C 'united':1A 'victor':4B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['ragtime', '30s', 'all', '20s', 'acoustic era']
                                        'tag_date'  1916
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559573.4168541  (2021-05-09 13:26:13)
                             'size'  3074907