======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '193'
                                          'artist'  'Samuel Siegel & Marie Caveny'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Ragtime Echoes 31-1-1919'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'Q-PIANO-3', 'q-chart-2', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1919'
                                        'comments'  ''
                                           'genre'  'prerock-instrumental'
                                             'bpm'  '120.3'
                                             'key'  '5A'
                                        '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))                     '120.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-instrumental'
'TDRC' (Recording time)                             '1919'
'TIT2' (Title/songname/content description)         'Ragtime Echoes 31-1-1919'
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '193000'
'TPE1' (Lead performer(s)/Soloist(s))               'Samuel Siegel & Marie Caveny'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.42 dB'
'TXXX:replaygain_track_peak'                        '0.658377'

========================== row from database ==========================
                                              'id'  1476217
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/veryearly/1919/Samuel Siegel mandolin - Ragtime Echoes (guitar - Marie Caveny) 31-1-1919.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  193
                                           'genre'  prerock-instrumental
                                        'filesize'  3940638
                                           'mtime'  1621705423
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm veryearly mandolin (guitar Caveny) prerock instrumental
                                      'tag_artist'  Samuel Siegel & Marie Caveny
                                     'tag_release'  None
                                       'tag_title'  Ragtime Echoes 31-1-1919
                                             'bpm'  120.3
                                    'search_title'  '1':4 '1919':5 '31':3 '3111919':6 'echoes':2 'ragtime':1
                                   'search_artist'  'caveny':4 'marie':3 'samuel':1 'siegel':2
                                  'search_release'  
                                     'search_rest'  'caveny':5,6 'guitar':3,4 'instrumental':8 'mandolin':2 'prerock':7 'veryearly':1
                                    'search_combo'  '1':4A '1919':5A '31':3A '3111919':6A 'caveny':10B,15,16 'echoes':2A 'guitar':13,14 'instrumental':18 'mandolin':12 'marie':9B 'prerock':17 'ragtime':1A 'samuel':7B 'siegel':8B 'veryearly':11
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1919
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705422.8841605  (2021-05-22 19:43:42)
                             'size'  3940638