======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '191'
                                          'artist'  "Joseph C Smith's Orchestra"
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Yellow Dog Blues 1-10-1919'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1919'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '89.1'
                                             'key'  '2A'
                                        '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))                     '89.1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1919'
'TIT2' (Title/songname/content description)         'Yellow Dog Blues 1-10-1919'
'TKEY' (Initial key)                                '2A'
'TLEN' (Length)                                     '191000'
'TPE1' (Lead performer(s)/Soloist(s))               "Joseph C Smith's Orchestra"
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.91 dB'
'TXXX:replaygain_track_peak'                        '0.681181'

========================== row from database ==========================
                                              'id'  1496732
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/veryearly/1919/Joseph C Smith_s Orchestra - Yellow Dog Blues 1-10-1919.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  191
                                           'genre'  prerock-swing
                                        'filesize'  3894653
                                           'mtime'  1620562741
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm veryearly Smith_s prerock swing
                                      'tag_artist'  Joseph C Smith's Orchestra
                                     'tag_release'  None
                                       'tag_title'  Yellow Dog Blues 1-10-1919
                                             'bpm'  89.1
                                    'search_title'  '1':4 '10':5 '1101919':7 '1919':6 'blues':3 'dog':2 'yellow':1
                                   'search_artist'  'c':2 'joseph':1 'orchestra':6 's':4 'smith':3 'smiths':5
                                  'search_release'  
                                     'search_rest'  'prerock':4 's':3 'smith':2 'swing':5 'veryearly':1
                                    'search_combo'  '1':4A '10':5A '1101919':7A '1919':6A 'blues':3A 'c':9B 'dog':2A 'joseph':8B 'orchestra':13B 'prerock':17 's':11B,16 'smith':10B,15 'smiths':12B 'swing':18 'veryearly':14 'yellow':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  2A
                                           '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-2', 'q-drums-2', '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'  1620562740.7003298  (2021-05-09 14:19:00)
                             'size'  3894653