======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '131'
                                          'artist'  'Edison Military Band'
                                     'text_people'  ''
                                         'release'  'Edison  8546'
                                           'title'  'Secret Polka (John Hazel cornet)'
                                           '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-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['brass & military']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1903'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '145.2'
                                             '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'
'TALB' (Album/Movie/Show title)                     'Edison  8546'
'TBPM' (BPM (beats per minute))                     '145.2'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1903'
'TIT2' (Title/songname/content description)         'Secret Polka (John Hazel cornet)'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '131000'
'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: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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.81 dB'
'TXXX:replaygain_track_peak'                        '0.534280'

========================== row from database ==========================
                                              'id'  1463764
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1903/Edison Military Band - Secret Polka (John Hazel cornet) 1903.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  131
                                           'genre'  prerock-band
                                        'filesize'  2675317
                                           'mtime'  1620558451
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1903 1903 prerock band
                                      'tag_artist'  Edison Military Band
                                     'tag_release'  Edison  8546
                                       'tag_title'  Secret Polka (John Hazel cornet)
                                             'bpm'  145.2
                                    'search_title'  'cornet':6,7 'hazel':5 'john':3,4 'polka':2 'secret':1
                                   'search_artist'  'band':3 'edison':1 'military':2
                                  'search_release'  '8546':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1903':6 'band':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':7
                                    'search_combo'  '00oldiepop':17 '1903':18 '8546':12C 'band':10B,20 'cornet':6A,7A 'country':16 'edison':8B,11C 'exotica':14 'hazel':5A 'jazz':13 'john':3A,4A 'military':9B 'oldies':15 'polka':2A 'prerock':19 'secret':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', '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'  ['q-vocals-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'q-bass-1', 'q-grit-1']
                                        'tag_date'  1903
                                     'discogstags'  ['brass & military']

============================== file details ==============================
                                           'mtime'  1620558450.929611  (2021-05-09 13:07:30)
                             'size'  2675317