======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '157'
                                          'artist'  'Irving Kaufman'
                                     'text_people'  ''
                                         'release'  'Columbia  2040 (46853)'
                                           'title'  'Greatest Battle Song Of All'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', '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'  "['jewish', 'all', 'jazz', '1925', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1916'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '111.9'
                                             'key'  '11B'
                                        '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)                     'Columbia  2040 (46853)'
'TBPM' (BPM (beats per minute))                     '111.9'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1916'
'TIT2' (Title/songname/content description)         'Greatest Battle Song Of All'
'TKEY' (Initial key)                                '11B'
'TLEN' (Length)                                     '157000'
'TPE1' (Lead performer(s)/Soloist(s))               'Irving Kaufman'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jewish', 'all', 'jazz', '1925', 'swing']
'TXXX:q-bass'                                       '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.45 dB'
'TXXX:replaygain_track_peak'                        '0.569519'

========================== row from database ==========================
                                              'id'  1467663
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1916/Irving Kaufman - Greatest Battle Song of All -6-1916.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  157
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3193585
                                           'mtime'  1620524043
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1916 of 1916 prerock jb jazz unsorted
                                      'tag_artist'  Irving Kaufman
                                     'tag_release'  Columbia  2040 (46853)
                                       'tag_title'  Greatest Battle Song Of All
                                             'bpm'  111.9
                                    'search_title'  'all':5 'battle':2 'greatest':1 'of':4 'song':3
                                   'search_artist'  'irving':1 'kaufman':2
                                  'search_release'  '2040':2 '46853':3,4 'columbia':1
                                     'search_rest'  '00oldiepop':5 '1916':6 'country':4 'exotica':2 'jazz':1 'jb':9 'of':7 'oldies':3 'prerock':8 'unsorted':10
                                    'search_combo'  '00oldiepop':16 '1916':17 '2040':9C '46853':10C,11C 'all':5A 'battle':2A 'columbia':8C 'country':15 'exotica':13 'greatest':1A 'irving':6B 'jazz':12 'jb':20 'kaufman':7B 'of':4A,18 'oldies':14 'prerock':19 'song':3A 'unsorted':21
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', '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-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['jewish', 'all', 'jazz', '1925', 'swing']
                                        'tag_date'  1916
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524043.4721093  (2021-05-09 03:34:03)
                             'size'  3193585