======================== unified (from filesystem) ========================
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                                        'duration'  '343'
                                          'artist'  'Liturgic Songs'
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                                         'release'  'In Israel Today vol.4'
                                           'title'  'Chassidic Nigunim (Medley)'
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                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'loc-m-israel'
                                             'bpm'  '117.535'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

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'TBPM' (BPM (beats per minute))                     '117.535'
'TCON' (Content type, a.k.a. Genre)                 'loc-m-israel'
'TDRC' (Recording time)                             '1970'
'TENC' (Encoded by)                                 'iTunes 10.1'
'TIT2' (Title/songname/content description)         'Chassidic Nigunim (Medley)'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Liturgic Songs'
'TRCK' (Track number/Position in set)               '6'
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'TXXX:q-drums'                                      '1'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Deben Bhattacharya - In Israel Today 4 (Westminster)/6.Chassidic Nigunim (Medley).mp3
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                                    'duration_sec'  343
                                           'genre'  loc-m-israel
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                                           'mtime'  1620526546
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                                       'tag_title'  Chassidic Nigunim (Medley)
                                             'bpm'  117.535
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                                   'search_artist'  'liturgic':1 'songs':2
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                                    'search_combo'  '00south':13 '4':11C '6':21 '6chassidic':23 'bhattacharya':18 'chassidic':1A,22 'deben':17 'east':16 'europe':14 'in':7C 'israel':8C,25 'liturgic':5B 'loc':24 'medley':3A,4A 'middle':15 'nigunim':2A 'songs':6B 'today':9C 'vol':10C 'vol4':12C 'westminster':19,20
                                    'tag_tracknum'  6
                                      'num_images'  2
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1970
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526545.98011  (2021-05-09 04:15:45)
                             'size'  10327803