======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '194'
                                          'artist'  'Jugoslav Tamburitza Orchestra'
                                     'text_people'  ''
                                         'release'  'Edison Blue Amberol 10760'
                                           'title'  'Potporija Srpskih Pjesama -9-1919'
                                           '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-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1919'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '139.6'
                                             'key'  '4A'
                                        '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 Blue Amberol 10760'
'TBPM' (BPM (beats per minute))                     '139.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1919'
'TIT2' (Title/songname/content description)         'Potporija Srpskih Pjesama -9-1919'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '194000'
'TPE1' (Lead performer(s)/Soloist(s))               'Jugoslav Tamburitza 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'                                      '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'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.66 dB'
'TXXX:replaygain_track_peak'                        '0.540467'

========================== row from database ==========================
                                              'id'  1476389
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/veryearly/1919/Jugoslav Tamburitza Orchestra - Potporija Srpskih pjesama -9-1919.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  194
                                           'genre'  prerock-swing
                                        'filesize'  3939266
                                           'mtime'  1620562741
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm veryearly pjesama prerock swing
                                      'tag_artist'  Jugoslav Tamburitza Orchestra
                                     'tag_release'  Edison Blue Amberol 10760
                                       'tag_title'  Potporija Srpskih Pjesama -9-1919
                                             'bpm'  139.6
                                    'search_title'  '1919':5 '9':4 '91919':6 'pjesama':3 'potporija':1 'srpskih':2
                                   'search_artist'  'jugoslav':1 'orchestra':3 'tamburitza':2
                                  'search_release'  '10760':4 'amberol':3 'blue':2 'edison':1
                                     'search_rest'  'pjesama':2 'prerock':3 'swing':4 'veryearly':1
                                    'search_combo'  '10760':13C '1919':5A '9':4A '91919':6A 'amberol':12C 'blue':11C 'edison':10C 'jugoslav':7B 'orchestra':9B 'pjesama':3A,15 'potporija':1A 'prerock':16 'srpskih':2A 'swing':17 'tamburitza':8B 'veryearly':14
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-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'  1620562740.7487378  (2021-05-09 14:19:00)
                             'size'  3939266